./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.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/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:07:48,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:07:48,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:07:48,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:07:48,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:07:48,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:07:48,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:07:48,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:07:48,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:07:48,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:07:48,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:07:48,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:07:48,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:07:48,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:07:48,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:07:48,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:07:48,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:07:48,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:07:48,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:07:48,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:07:48,835 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:07:48,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:07:48,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:07:48,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:07:48,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:07:48,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:07:48,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:07:48,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:07:48,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:07:48,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:07:48,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:07:48,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:07:48,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:07:48,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:07:48,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:07:48,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:07:48,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:07:48,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:07:48,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:07:48,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:07:48,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:07:48,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:07:48,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:07:48,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:07:48,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:07:48,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:07:48,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:07:48,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:07:48,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:07:48,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:07:48,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:07:48,892 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:07:48,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:07:48,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:07:48,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:07:48,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:07:48,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:07:48,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:07:48,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:07:48,894 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:07:48,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:07:48,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:07:48,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:07:48,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:07:48,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:07:48,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:07:48,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:48,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:07:48,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:07:48,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:07:48,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:07:48,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:07:48,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:07:48,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2022-07-13 02:07:49,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:07:49,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:07:49,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:07:49,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:07:49,145 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:07:49,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-07-13 02:07:49,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6b0e85d0/fc1e8115e4354103bcc4a33cf4bdecea/FLAG4c619947e [2022-07-13 02:07:49,607 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:07:49,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-07-13 02:07:49,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6b0e85d0/fc1e8115e4354103bcc4a33cf4bdecea/FLAG4c619947e [2022-07-13 02:07:49,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6b0e85d0/fc1e8115e4354103bcc4a33cf4bdecea [2022-07-13 02:07:49,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:07:49,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:07:49,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:49,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:07:49,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:07:49,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac4a731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49, skipping insertion in model container [2022-07-13 02:07:49,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:07:49,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:07:49,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:49,806 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:07:49,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:07:49,841 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:07:49,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49 WrapperNode [2022-07-13 02:07:49,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:07:49,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:49,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:07:49,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:07:49,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,866 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-07-13 02:07:49,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:07:49,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:07:49,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:07:49,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:07:49,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:07:49,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:07:49,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:07:49,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:07:49,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (1/1) ... [2022-07-13 02:07:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:07:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:49,918 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 02:07:49,922 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 02:07:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-07-13 02:07:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-07-13 02:07:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:07:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:07:49,982 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:07:49,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:07:50,065 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:07:50,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:07:50,071 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 02:07:50,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:50 BoogieIcfgContainer [2022-07-13 02:07:50,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:07:50,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:07:50,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:07:50,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:07:50,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:07:49" (1/3) ... [2022-07-13 02:07:50,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171171b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:50, skipping insertion in model container [2022-07-13 02:07:50,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:07:49" (2/3) ... [2022-07-13 02:07:50,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171171b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:07:50, skipping insertion in model container [2022-07-13 02:07:50,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:07:50" (3/3) ... [2022-07-13 02:07:50,079 INFO L111 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2022-07-13 02:07:50,091 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:07:50,092 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:07:50,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:07:50,136 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@6a261a41, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2bb0eb3a [2022-07-13 02:07:50,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-13 02:07:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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 02:07:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:07:50,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:50,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:50,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2022-07-13 02:07:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469602766] [2022-07-13 02:07:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:50,310 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 02:07:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:50,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469602766] [2022-07-13 02:07:50,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469602766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:50,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:50,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922956341] [2022-07-13 02:07:50,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:50,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:50,365 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:50,448 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-07-13 02:07:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:50,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-13 02:07:50,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:50,456 INFO L225 Difference]: With dead ends: 45 [2022-07-13 02:07:50,456 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 02:07:50,459 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 02:07:50,462 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:50,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 48 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 02:07:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 02:07:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 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 02:07:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-07-13 02:07:50,541 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-07-13 02:07:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-07-13 02:07:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:50,542 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-07-13 02:07:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:07:50,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:50,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:50,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:07:50,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:50,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2022-07-13 02:07:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:50,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469936798] [2022-07-13 02:07:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:50,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:50,600 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 02:07:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:50,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469936798] [2022-07-13 02:07:50,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469936798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:50,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:50,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707300542] [2022-07-13 02:07:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:50,607 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:50,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:50,646 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-07-13 02:07:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-13 02:07:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:50,647 INFO L225 Difference]: With dead ends: 42 [2022-07-13 02:07:50,647 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 02:07:50,648 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 02:07:50,649 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:50,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 02:07:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-07-13 02:07:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-07-13 02:07:50,658 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2022-07-13 02:07:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:50,659 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-07-13 02:07:50,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-07-13 02:07:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 02:07:50,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:50,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:07:50,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1393066815, now seen corresponding path program 1 times [2022-07-13 02:07:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738972201] [2022-07-13 02:07:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:50,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738972201] [2022-07-13 02:07:50,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738972201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53272555] [2022-07-13 02:07:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:50,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:50,743 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 02:07:50,759 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 02:07:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:50,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:07:50,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:50,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:07:50,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53272555] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:50,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-13 02:07:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945445025] [2022-07-13 02:07:50,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 02:07:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 02:07:50,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-13 02:07:50,943 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:51,038 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-07-13 02:07:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:07:51,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 02:07:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:51,042 INFO L225 Difference]: With dead ends: 39 [2022-07-13 02:07:51,042 INFO L226 Difference]: Without dead ends: 38 [2022-07-13 02:07:51,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:07:51,046 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:51,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 55 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-13 02:07:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-07-13 02:07:51,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:51,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-07-13 02:07:51,067 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2022-07-13 02:07:51,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:51,067 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-07-13 02:07:51,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-07-13 02:07:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:07:51,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:51,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:51,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:51,270 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 02:07:51,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2022-07-13 02:07:51,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487794204] [2022-07-13 02:07:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,328 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 02:07:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:51,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487794204] [2022-07-13 02:07:51,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487794204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:51,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:51,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:07:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782681565] [2022-07-13 02:07:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:51,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:07:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:51,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:07:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:07:51,330 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:51,373 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-07-13 02:07:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-13 02:07:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:51,375 INFO L225 Difference]: With dead ends: 48 [2022-07-13 02:07:51,375 INFO L226 Difference]: Without dead ends: 47 [2022-07-13 02:07:51,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:51,376 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-13 02:07:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-07-13 02:07:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 31 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 02:07:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-07-13 02:07:51,384 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2022-07-13 02:07:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:51,385 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-07-13 02:07:51,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-07-13 02:07:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:07:51,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:51,386 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:07:51,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2022-07-13 02:07:51,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:51,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202967331] [2022-07-13 02:07:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,428 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 02:07:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:51,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202967331] [2022-07-13 02:07:51,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202967331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:51,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:51,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:07:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851521347] [2022-07-13 02:07:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:51,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:51,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:51,431 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:51,449 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-07-13 02:07:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-13 02:07:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:51,453 INFO L225 Difference]: With dead ends: 64 [2022-07-13 02:07:51,453 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 02:07:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:51,454 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 02:07:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-07-13 02:07:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 02:07:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-07-13 02:07:51,460 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2022-07-13 02:07:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:51,461 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-07-13 02:07:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-07-13 02:07:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 02:07:51,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:51,462 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:07:51,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2022-07-13 02:07:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:51,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936405915] [2022-07-13 02:07:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,514 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 02:07:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936405915] [2022-07-13 02:07:51,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936405915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:51,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:51,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:07:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013610779] [2022-07-13 02:07:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:07:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:07:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:07:51,520 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:51,531 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-07-13 02:07:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:07:51,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-13 02:07:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:51,532 INFO L225 Difference]: With dead ends: 42 [2022-07-13 02:07:51,532 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 02:07:51,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:07:51,533 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:51,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 02:07:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-13 02:07:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 02:07:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-07-13 02:07:51,552 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-07-13 02:07:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-07-13 02:07:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-07-13 02:07:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 02:07:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:51,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:51,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:07:51,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 719911349, now seen corresponding path program 1 times [2022-07-13 02:07:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:51,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752776991] [2022-07-13 02:07:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 02:07:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:51,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752776991] [2022-07-13 02:07:51,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752776991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:51,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711498963] [2022-07-13 02:07:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:51,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:51,702 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 02:07:51,703 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 02:07:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:51,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:07:51,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 02:07:51,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:07:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711498963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:51,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:51,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-07-13 02:07:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610643265] [2022-07-13 02:07:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:07:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:07:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:07:51,784 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 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 02:07:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:51,846 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-07-13 02:07:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:07:51,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 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) Word has length 27 [2022-07-13 02:07:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:51,849 INFO L225 Difference]: With dead ends: 37 [2022-07-13 02:07:51,849 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 02:07:51,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:07:51,851 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:51,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 02:07:51,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-13 02:07:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 02:07:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-07-13 02:07:51,858 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2022-07-13 02:07:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:51,858 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-07-13 02:07:51,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 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 02:07:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-07-13 02:07:51,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 02:07:51,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:51,859 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:51,879 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 02:07:52,064 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,SelfDestructingSolverStorable6 [2022-07-13 02:07:52,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2022-07-13 02:07:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256968927] [2022-07-13 02:07:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:52,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 02:07:52,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:52,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256968927] [2022-07-13 02:07:52,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256968927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:52,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:52,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:07:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437651994] [2022-07-13 02:07:52,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:52,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:07:52,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:07:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:07:52,094 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:52,099 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-07-13 02:07:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:07:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-13 02:07:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:52,100 INFO L225 Difference]: With dead ends: 36 [2022-07-13 02:07:52,100 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 02:07:52,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 02:07:52,101 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:52,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:07:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 02:07:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-13 02:07:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 02:07:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-07-13 02:07:52,107 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2022-07-13 02:07:52,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:52,107 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-07-13 02:07:52,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 02:07:52,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-07-13 02:07:52,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 02:07:52,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:52,108 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 02:07:52,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash 2107341579, now seen corresponding path program 1 times [2022-07-13 02:07:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:52,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703427476] [2022-07-13 02:07:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:07:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:52,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703427476] [2022-07-13 02:07:52,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703427476] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:52,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347613392] [2022-07-13 02:07:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:52,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:52,167 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 02:07:52,186 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 02:07:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:07:52,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:07:52,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:07:52,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347613392] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:52,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:52,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-07-13 02:07:52,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186497561] [2022-07-13 02:07:52,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:52,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:07:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:52,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:07:52,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:07:52,388 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 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 02:07:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:52,649 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-07-13 02:07:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 02:07:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 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) Word has length 30 [2022-07-13 02:07:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:52,652 INFO L225 Difference]: With dead ends: 122 [2022-07-13 02:07:52,652 INFO L226 Difference]: Without dead ends: 89 [2022-07-13 02:07:52,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:07:52,655 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:52,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 142 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-13 02:07:52,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2022-07-13 02:07:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 02:07:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-07-13 02:07:52,678 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2022-07-13 02:07:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:52,680 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-07-13 02:07:52,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 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 02:07:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-07-13 02:07:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 02:07:52,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:52,687 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:52,712 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 02:07:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:52,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash 164414216, now seen corresponding path program 2 times [2022-07-13 02:07:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:52,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497467431] [2022-07-13 02:07:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:07:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:53,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:53,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 100 proven. 42 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 02:07:53,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:53,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497467431] [2022-07-13 02:07:53,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497467431] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:53,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129627339] [2022-07-13 02:07:53,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:53,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:53,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:53,211 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 02:07:53,213 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 02:07:53,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:07:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:53,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:07:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 02:07:53,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 02:07:53,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129627339] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:53,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:53,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-07-13 02:07:53,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283045887] [2022-07-13 02:07:53,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:53,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 02:07:53,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 02:07:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:07:53,908 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 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 02:07:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:54,100 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2022-07-13 02:07:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:07:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 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) Word has length 91 [2022-07-13 02:07:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:54,103 INFO L225 Difference]: With dead ends: 139 [2022-07-13 02:07:54,103 INFO L226 Difference]: Without dead ends: 83 [2022-07-13 02:07:54,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-07-13 02:07:54,107 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:54,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 206 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-13 02:07:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-13 02:07:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-13 02:07:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-07-13 02:07:54,128 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 91 [2022-07-13 02:07:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:54,129 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-07-13 02:07:54,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 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 02:07:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-07-13 02:07:54,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 02:07:54,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:54,132 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:54,157 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 02:07:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:54,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash -594461554, now seen corresponding path program 3 times [2022-07-13 02:07:54,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:54,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708593941] [2022-07-13 02:07:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:07:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 02:07:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708593941] [2022-07-13 02:07:54,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708593941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373691626] [2022-07-13 02:07:54,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:07:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:54,572 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 02:07:54,573 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 02:07:54,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-13 02:07:54,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:07:54,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-13 02:07:54,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-13 02:07:54,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373691626] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:54,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:54,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-07-13 02:07:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239145400] [2022-07-13 02:07:54,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 02:07:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 02:07:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:07:54,946 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 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 02:07:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:55,436 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2022-07-13 02:07:55,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-13 02:07:55,437 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 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) Word has length 97 [2022-07-13 02:07:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:55,438 INFO L225 Difference]: With dead ends: 148 [2022-07-13 02:07:55,438 INFO L226 Difference]: Without dead ends: 130 [2022-07-13 02:07:55,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2022-07-13 02:07:55,441 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 212 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:55,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 151 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-13 02:07:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-07-13 02:07:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 02:07:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2022-07-13 02:07:55,463 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 97 [2022-07-13 02:07:55,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:55,464 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2022-07-13 02:07:55,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 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 02:07:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2022-07-13 02:07:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 02:07:55,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:55,469 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:55,499 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 02:07:55,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 02:07:55,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:55,684 INFO L85 PathProgramCache]: Analyzing trace with hash -802253237, now seen corresponding path program 4 times [2022-07-13 02:07:55,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:55,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132148873] [2022-07-13 02:07:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:55,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:07:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-13 02:07:55,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:55,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132148873] [2022-07-13 02:07:55,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132148873] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:55,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139011389] [2022-07-13 02:07:55,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:07:55,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:55,983 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 02:07:55,984 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 02:07:56,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:07:56,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:56,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:07:56,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-13 02:07:56,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-13 02:07:57,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139011389] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:57,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:57,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-07-13 02:07:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071055711] [2022-07-13 02:07:57,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-13 02:07:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-13 02:07:57,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2022-07-13 02:07:57,343 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 02:07:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:57,621 INFO L93 Difference]: Finished difference Result 638 states and 722 transitions. [2022-07-13 02:07:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-13 02:07:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-07-13 02:07:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:57,627 INFO L225 Difference]: With dead ends: 638 [2022-07-13 02:07:57,627 INFO L226 Difference]: Without dead ends: 469 [2022-07-13 02:07:57,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2022-07-13 02:07:57,630 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 103 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:57,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 232 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-13 02:07:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 230. [2022-07-13 02:07:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 213 states have (on average 1.0938967136150235) internal successors, (233), 213 states have internal predecessors, (233), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 02:07:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2022-07-13 02:07:57,652 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 132 [2022-07-13 02:07:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:57,652 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2022-07-13 02:07:57,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 02:07:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2022-07-13 02:07:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-13 02:07:57,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:57,656 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:57,681 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 02:07:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:57,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:07:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1517932895, now seen corresponding path program 5 times [2022-07-13 02:07:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:57,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485762812] [2022-07-13 02:07:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:07:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:07:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1751 proven. 51 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2022-07-13 02:07:58,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485762812] [2022-07-13 02:07:58,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485762812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827643137] [2022-07-13 02:07:58,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:07:58,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:58,463 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 02:07:58,464 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 02:07:58,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-07-13 02:07:58,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:58,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:07:58,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1319 proven. 88 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-07-13 02:07:58,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1337 proven. 70 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-07-13 02:07:59,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827643137] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:59,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:59,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2022-07-13 02:07:59,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467306734] [2022-07-13 02:07:59,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:59,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 02:07:59,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 02:07:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-07-13 02:07:59,752 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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 02:08:00,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:00,193 INFO L93 Difference]: Finished difference Result 492 states and 542 transitions. [2022-07-13 02:08:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 02:08:00,193 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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) Word has length 262 [2022-07-13 02:08:00,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:00,195 INFO L225 Difference]: With dead ends: 492 [2022-07-13 02:08:00,195 INFO L226 Difference]: Without dead ends: 301 [2022-07-13 02:08:00,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2022-07-13 02:08:00,197 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:00,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 259 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:08:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-13 02:08:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-07-13 02:08:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 268 states have (on average 1.078358208955224) internal successors, (289), 268 states have internal predecessors, (289), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 02:08:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2022-07-13 02:08:00,217 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 262 [2022-07-13 02:08:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:00,218 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2022-07-13 02:08:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 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 02:08:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2022-07-13 02:08:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-07-13 02:08:00,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:00,221 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:00,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:00,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2101259226, now seen corresponding path program 6 times [2022-07-13 02:08:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:00,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477140784] [2022-07-13 02:08:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:08:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:01,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1945 proven. 90 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2022-07-13 02:08:01,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477140784] [2022-07-13 02:08:01,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477140784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806630339] [2022-07-13 02:08:01,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:08:01,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:01,016 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 02:08:01,048 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 02:08:01,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-13 02:08:01,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:08:01,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2022-07-13 02:08:01,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2022-07-13 02:08:02,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806630339] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:02,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:02,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2022-07-13 02:08:02,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63749116] [2022-07-13 02:08:02,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:02,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 02:08:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 02:08:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 02:08:02,066 INFO L87 Difference]: Start difference. First operand 288 states and 309 transitions. Second operand has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 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 02:08:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:04,097 INFO L93 Difference]: Finished difference Result 1217 states and 1388 transitions. [2022-07-13 02:08:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-13 02:08:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 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) Word has length 283 [2022-07-13 02:08:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:04,101 INFO L225 Difference]: With dead ends: 1217 [2022-07-13 02:08:04,102 INFO L226 Difference]: Without dead ends: 971 [2022-07-13 02:08:04,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2022-07-13 02:08:04,110 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 386 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:04,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 380 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:08:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-07-13 02:08:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 380. [2022-07-13 02:08:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 357 states have (on average 1.0812324929971988) internal successors, (386), 357 states have internal predecessors, (386), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 02:08:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2022-07-13 02:08:04,152 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 283 [2022-07-13 02:08:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:04,152 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 409 transitions. [2022-07-13 02:08:04,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 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 02:08:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 409 transitions. [2022-07-13 02:08:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-13 02:08:04,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:04,157 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:04,182 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 02:08:04,379 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,SelfDestructingSolverStorable13 [2022-07-13 02:08:04,380 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -850417349, now seen corresponding path program 7 times [2022-07-13 02:08:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:04,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515243554] [2022-07-13 02:08:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:04,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:08:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:04,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3710 proven. 138 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2022-07-13 02:08:05,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:05,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515243554] [2022-07-13 02:08:05,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515243554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:05,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873347040] [2022-07-13 02:08:05,085 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:08:05,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:05,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:05,088 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 02:08:05,118 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 02:08:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:05,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-13 02:08:05,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-07-13 02:08:05,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-07-13 02:08:09,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873347040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:09,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:09,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2022-07-13 02:08:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748463301] [2022-07-13 02:08:09,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:09,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-13 02:08:09,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-13 02:08:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-07-13 02:08:09,480 INFO L87 Difference]: Start difference. First operand 380 states and 409 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 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 02:08:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:10,897 INFO L93 Difference]: Finished difference Result 787 states and 849 transitions. [2022-07-13 02:08:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-13 02:08:10,898 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 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) Word has length 322 [2022-07-13 02:08:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:10,900 INFO L225 Difference]: With dead ends: 787 [2022-07-13 02:08:10,900 INFO L226 Difference]: Without dead ends: 521 [2022-07-13 02:08:10,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2437 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2022-07-13 02:08:10,904 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 76 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:10,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 439 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:08:10,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-13 02:08:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 469. [2022-07-13 02:08:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 442 states have (on average 1.0701357466063348) internal successors, (473), 442 states have internal predecessors, (473), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-13 02:08:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 500 transitions. [2022-07-13 02:08:10,942 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 500 transitions. Word has length 322 [2022-07-13 02:08:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:10,943 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 500 transitions. [2022-07-13 02:08:10,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 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 02:08:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 500 transitions. [2022-07-13 02:08:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-07-13 02:08:10,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:10,946 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:10,971 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 02:08:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 02:08:11,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash -200847262, now seen corresponding path program 8 times [2022-07-13 02:08:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791844618] [2022-07-13 02:08:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:08:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:12,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4312 proven. 195 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2022-07-13 02:08:12,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:12,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791844618] [2022-07-13 02:08:12,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791844618] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:12,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770015272] [2022-07-13 02:08:12,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:08:12,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:12,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:12,025 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 02:08:12,054 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 02:08:12,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:08:12,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 02:08:12,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-07-13 02:08:12,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-07-13 02:08:17,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770015272] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:17,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:17,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2022-07-13 02:08:17,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216891051] [2022-07-13 02:08:17,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:17,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-13 02:08:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-13 02:08:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 02:08:17,493 INFO L87 Difference]: Start difference. First operand 469 states and 500 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 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 02:08:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:19,365 INFO L93 Difference]: Finished difference Result 958 states and 1021 transitions. [2022-07-13 02:08:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-13 02:08:19,365 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 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) Word has length 337 [2022-07-13 02:08:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:19,369 INFO L225 Difference]: With dead ends: 958 [2022-07-13 02:08:19,369 INFO L226 Difference]: Without dead ends: 668 [2022-07-13 02:08:19,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 680 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3934 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2022-07-13 02:08:19,375 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 88 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:19,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 481 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:08:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-13 02:08:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 588. [2022-07-13 02:08:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 556 states have (on average 1.0611510791366907) internal successors, (590), 556 states have internal predecessors, (590), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 02:08:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 622 transitions. [2022-07-13 02:08:19,433 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 622 transitions. Word has length 337 [2022-07-13 02:08:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:19,434 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 622 transitions. [2022-07-13 02:08:19,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 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 02:08:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 622 transitions. [2022-07-13 02:08:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-07-13 02:08:19,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:19,437 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:19,457 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 02:08:19,647 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,SelfDestructingSolverStorable15 [2022-07-13 02:08:19,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1183428946, now seen corresponding path program 9 times [2022-07-13 02:08:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533364751] [2022-07-13 02:08:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:19,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:08:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 4853 proven. 261 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2022-07-13 02:08:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:20,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533364751] [2022-07-13 02:08:20,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533364751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597244460] [2022-07-13 02:08:20,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:08:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:20,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:20,612 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 02:08:20,613 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 02:08:20,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-07-13 02:08:20,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:20,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:08:20,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-07-13 02:08:21,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-07-13 02:08:22,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597244460] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:22,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:22,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2022-07-13 02:08:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239422766] [2022-07-13 02:08:22,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:22,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-07-13 02:08:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-07-13 02:08:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2022-07-13 02:08:22,170 INFO L87 Difference]: Start difference. First operand 588 states and 622 transitions. Second operand has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 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 02:08:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:24,316 INFO L93 Difference]: Finished difference Result 1739 states and 1954 transitions. [2022-07-13 02:08:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-13 02:08:24,317 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 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) Word has length 359 [2022-07-13 02:08:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:24,322 INFO L225 Difference]: With dead ends: 1739 [2022-07-13 02:08:24,322 INFO L226 Difference]: Without dead ends: 1423 [2022-07-13 02:08:24,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2022-07-13 02:08:24,326 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 607 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:24,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 513 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:08:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-07-13 02:08:24,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 803. [2022-07-13 02:08:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 765 states have (on average 1.0627450980392157) internal successors, (813), 765 states have internal predecessors, (813), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-13 02:08:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 851 transitions. [2022-07-13 02:08:24,411 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 851 transitions. Word has length 359 [2022-07-13 02:08:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:24,412 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 851 transitions. [2022-07-13 02:08:24,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 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 02:08:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 851 transitions. [2022-07-13 02:08:24,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-13 02:08:24,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:24,416 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:24,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 02:08:24,632 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 229112565, now seen corresponding path program 10 times [2022-07-13 02:08:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:24,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475435226] [2022-07-13 02:08:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:24,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:08:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 6985 proven. 336 refuted. 0 times theorem prover too weak. 4071 trivial. 0 not checked. [2022-07-13 02:08:25,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:25,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475435226] [2022-07-13 02:08:25,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475435226] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:25,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489824449] [2022-07-13 02:08:25,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:08:25,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:25,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:08:25,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:08:26,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:08:26,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:26,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 02:08:26,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-07-13 02:08:26,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-07-13 02:08:32,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489824449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:32,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:32,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2022-07-13 02:08:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128133156] [2022-07-13 02:08:32,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:32,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-13 02:08:32,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-13 02:08:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2022-07-13 02:08:32,944 INFO L87 Difference]: Start difference. First operand 803 states and 851 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-13 02:08:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:36,270 INFO L93 Difference]: Finished difference Result 1552 states and 1640 transitions. [2022-07-13 02:08:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-07-13 02:08:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 388 [2022-07-13 02:08:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:36,275 INFO L225 Difference]: With dead ends: 1552 [2022-07-13 02:08:36,275 INFO L226 Difference]: Without dead ends: 1154 [2022-07-13 02:08:36,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8655 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2022-07-13 02:08:36,281 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 108 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:36,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 653 Invalid, 3857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 02:08:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-07-13 02:08:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1000. [2022-07-13 02:08:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 955 states have (on average 1.0554973821989528) internal successors, (1008), 955 states have internal predecessors, (1008), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2022-07-13 02:08:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1053 transitions. [2022-07-13 02:08:36,406 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1053 transitions. Word has length 388 [2022-07-13 02:08:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:36,406 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1053 transitions. [2022-07-13 02:08:36,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-13 02:08:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1053 transitions. [2022-07-13 02:08:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-07-13 02:08:36,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:36,410 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:36,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:36,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 02:08:36,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -70699781, now seen corresponding path program 11 times [2022-07-13 02:08:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:36,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381643065] [2022-07-13 02:08:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:36,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:08:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 6812 proven. 420 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-07-13 02:08:37,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381643065] [2022-07-13 02:08:37,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381643065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:37,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555970232] [2022-07-13 02:08:37,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:08:37,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:37,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:37,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:08:37,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:08:38,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-07-13 02:08:38,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:38,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 02:08:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8259 proven. 1615 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-07-13 02:08:38,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8445 proven. 1429 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-07-13 02:08:43,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555970232] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:43,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:43,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2022-07-13 02:08:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70507500] [2022-07-13 02:08:43,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-07-13 02:08:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-07-13 02:08:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2022-07-13 02:08:43,167 INFO L87 Difference]: Start difference. First operand 1000 states and 1053 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 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 02:08:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:46,875 INFO L93 Difference]: Finished difference Result 1870 states and 1963 transitions. [2022-07-13 02:08:46,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-07-13 02:08:46,876 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 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) Word has length 404 [2022-07-13 02:08:46,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:46,881 INFO L225 Difference]: With dead ends: 1870 [2022-07-13 02:08:46,881 INFO L226 Difference]: Without dead ends: 1448 [2022-07-13 02:08:46,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 805 SyntacticMatches, 3 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10402 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2022-07-13 02:08:46,887 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 131 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:46,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 503 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 02:08:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-07-13 02:08:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1248. [2022-07-13 02:08:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1195 states have (on average 1.0502092050209204) internal successors, (1255), 1195 states have internal predecessors, (1255), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2022-07-13 02:08:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1308 transitions. [2022-07-13 02:08:47,070 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1308 transitions. Word has length 404 [2022-07-13 02:08:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:47,071 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1308 transitions. [2022-07-13 02:08:47,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 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 02:08:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1308 transitions. [2022-07-13 02:08:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-07-13 02:08:47,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:47,076 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-07-13 02:08:47,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:47,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:08:47,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 162608001, now seen corresponding path program 12 times [2022-07-13 02:08:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:47,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522882809] [2022-07-13 02:08:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:08:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:08:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 9009 proven. 1914 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2022-07-13 02:08:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522882809] [2022-07-13 02:08:48,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522882809] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722793261] [2022-07-13 02:08:48,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:08:48,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:48,854 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:08:48,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:08:49,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-07-13 02:08:49,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:49,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 02:08:49,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-07-13 02:08:50,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-07-13 02:08:57,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722793261] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:57,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:08:57,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2022-07-13 02:08:57,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653757671] [2022-07-13 02:08:57,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:57,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-07-13 02:08:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-07-13 02:08:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2022-07-13 02:08:57,745 INFO L87 Difference]: Start difference. First operand 1248 states and 1308 transitions. Second operand has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-13 02:09:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:26,370 INFO L93 Difference]: Finished difference Result 4255 states and 4522 transitions. [2022-07-13 02:09:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2022-07-13 02:09:26,371 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 410 [2022-07-13 02:09:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:26,381 INFO L225 Difference]: With dead ends: 4255 [2022-07-13 02:09:26,381 INFO L226 Difference]: Without dead ends: 3470 [2022-07-13 02:09:26,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2022-07-13 02:09:26,427 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1935 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:26,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 914 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 02:09:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-07-13 02:09:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2784. [2022-07-13 02:09:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2675 states have (on average 1.0429906542056075) internal successors, (2790), 2675 states have internal predecessors, (2790), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2022-07-13 02:09:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 2899 transitions. [2022-07-13 02:09:26,949 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 2899 transitions. Word has length 410 [2022-07-13 02:09:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:26,949 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 2899 transitions. [2022-07-13 02:09:26,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-13 02:09:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 2899 transitions. [2022-07-13 02:09:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2022-07-13 02:09:26,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:26,963 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 25, 24, 24, 24, 24, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2022-07-13 02:09:26,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:27,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:27,179 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:09:27,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash -262623055, now seen corresponding path program 13 times [2022-07-13 02:09:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:27,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415843684] [2022-07-13 02:09:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:27,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:09:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:29,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1221 proven. 6 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-07-13 02:09:30,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:30,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415843684] [2022-07-13 02:09:30,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415843684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:30,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814680310] [2022-07-13 02:09:30,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:09:30,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:30,913 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:09:30,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:09:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:31,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:09:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-07-13 02:09:31,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-07-13 02:09:32,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814680310] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:32,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:09:32,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-07-13 02:09:32,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228839022] [2022-07-13 02:09:32,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:32,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:09:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:32,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:09:32,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:09:32,877 INFO L87 Difference]: Start difference. First operand 2784 states and 2899 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 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 02:09:33,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:33,130 INFO L93 Difference]: Finished difference Result 4067 states and 4234 transitions. [2022-07-13 02:09:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:09:33,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 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) Word has length 860 [2022-07-13 02:09:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:33,136 INFO L225 Difference]: With dead ends: 4067 [2022-07-13 02:09:33,136 INFO L226 Difference]: Without dead ends: 2035 [2022-07-13 02:09:33,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1795 GetRequests, 1778 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:09:33,143 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:33,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:09:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-07-13 02:09:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2022-07-13 02:09:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1957 states have (on average 1.0424118548799182) internal successors, (2040), 1957 states have internal predecessors, (2040), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2022-07-13 02:09:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2118 transitions. [2022-07-13 02:09:33,402 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2118 transitions. Word has length 860 [2022-07-13 02:09:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:33,402 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2118 transitions. [2022-07-13 02:09:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 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 02:09:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2118 transitions. [2022-07-13 02:09:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2022-07-13 02:09:33,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:33,414 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-07-13 02:09:33,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:33,627 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:09:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1243703374, now seen corresponding path program 14 times [2022-07-13 02:09:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339011479] [2022-07-13 02:09:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:34,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:09:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2783 proven. 30 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-07-13 02:09:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339011479] [2022-07-13 02:09:36,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339011479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:36,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408889754] [2022-07-13 02:09:36,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:09:36,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:36,980 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:09:36,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:09:37,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:09:37,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:37,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:09:37,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-07-13 02:09:37,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-07-13 02:09:39,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408889754] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:39,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:09:39,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2022-07-13 02:09:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515956361] [2022-07-13 02:09:39,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:39,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:09:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:09:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:09:39,611 INFO L87 Difference]: Start difference. First operand 2035 states and 2118 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 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 02:09:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:39,833 INFO L93 Difference]: Finished difference Result 2620 states and 2726 transitions. [2022-07-13 02:09:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 02:09:39,834 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 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) Word has length 867 [2022-07-13 02:09:39,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:39,837 INFO L225 Difference]: With dead ends: 2620 [2022-07-13 02:09:39,837 INFO L226 Difference]: Without dead ends: 1337 [2022-07-13 02:09:39,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1821 GetRequests, 1794 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-07-13 02:09:39,841 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:39,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 139 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:09:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-07-13 02:09:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-07-13 02:09:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1288 states have (on average 1.0411490683229814) internal successors, (1341), 1288 states have internal predecessors, (1341), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-13 02:09:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1390 transitions. [2022-07-13 02:09:39,984 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1390 transitions. Word has length 867 [2022-07-13 02:09:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1390 transitions. [2022-07-13 02:09:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 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 02:09:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1390 transitions. [2022-07-13 02:09:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2022-07-13 02:09:39,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:39,994 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-13 02:09:40,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:40,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-13 02:09:40,207 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:09:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash -368747676, now seen corresponding path program 15 times [2022-07-13 02:09:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:40,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148767245] [2022-07-13 02:09:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:40,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 02:09:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 23396 proven. 615 refuted. 0 times theorem prover too weak. 47588 trivial. 0 not checked. [2022-07-13 02:09:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:42,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148767245] [2022-07-13 02:09:42,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148767245] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:42,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638093120] [2022-07-13 02:09:42,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:09:42,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:42,825 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:09:42,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 02:09:43,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-07-13 02:09:43,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:43,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 02:09:43,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2022-07-13 02:09:44,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2022-07-13 02:09:46,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638093120] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:46,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:09:46,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2022-07-13 02:09:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23456454] [2022-07-13 02:09:46,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:46,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-07-13 02:09:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:46,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-07-13 02:09:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2022-07-13 02:09:46,203 INFO L87 Difference]: Start difference. First operand 1337 states and 1390 transitions. Second operand has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 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 02:09:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:53,062 INFO L93 Difference]: Finished difference Result 5324 states and 5959 transitions. [2022-07-13 02:09:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-07-13 02:09:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 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) Word has length 897 [2022-07-13 02:09:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:53,072 INFO L225 Difference]: With dead ends: 5324 [2022-07-13 02:09:53,072 INFO L226 Difference]: Without dead ends: 4442 [2022-07-13 02:09:53,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2062 GetRequests, 1790 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2022-07-13 02:09:53,079 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1463 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:53,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 762 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 02:09:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-07-13 02:09:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 1903. [2022-07-13 02:09:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1846 states have (on average 1.0444203683640303) internal successors, (1928), 1846 states have internal predecessors, (1928), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-13 02:09:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 1985 transitions. [2022-07-13 02:09:53,313 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 1985 transitions. Word has length 897 [2022-07-13 02:09:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:53,314 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 1985 transitions. [2022-07-13 02:09:53,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 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 02:09:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 1985 transitions. [2022-07-13 02:09:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-07-13 02:09:53,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:53,326 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-13 02:09:53,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:53,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:53,552 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:09:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -131776890, now seen corresponding path program 16 times [2022-07-13 02:09:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:53,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593884332] [2022-07-13 02:09:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:09:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:54,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:09:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 40095 proven. 726 refuted. 0 times theorem prover too weak. 48196 trivial. 0 not checked. [2022-07-13 02:09:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593884332] [2022-07-13 02:09:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593884332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456734943] [2022-07-13 02:09:56,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:09:56,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:56,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:56,844 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:09:56,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 02:09:57,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:09:57,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:57,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-13 02:09:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34097 trivial. 0 not checked. [2022-07-13 02:09:58,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:10:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34097 trivial. 0 not checked. [2022-07-13 02:10:29,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456734943] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:10:29,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:10:29,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2022-07-13 02:10:29,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093852569] [2022-07-13 02:10:29,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:10:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-07-13 02:10:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:10:29,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-07-13 02:10:29,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2022-07-13 02:10:29,833 INFO L87 Difference]: Start difference. First operand 1903 states and 1985 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 02:10:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:10:38,156 INFO L93 Difference]: Finished difference Result 3777 states and 3942 transitions. [2022-07-13 02:10:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-07-13 02:10:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 965 [2022-07-13 02:10:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:10:38,162 INFO L225 Difference]: With dead ends: 3777 [2022-07-13 02:10:38,162 INFO L226 Difference]: Without dead ends: 2618 [2022-07-13 02:10:38,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2237 GetRequests, 1940 SyntacticMatches, 1 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28143 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2022-07-13 02:10:38,171 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 162 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 8613 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 8639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 8613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:10:38,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 978 Invalid, 8639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 8613 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 02:10:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-07-13 02:10:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2312. [2022-07-13 02:10:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2239 states have (on average 1.0397498883430103) internal successors, (2328), 2239 states have internal predecessors, (2328), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2022-07-13 02:10:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2401 transitions. [2022-07-13 02:10:38,456 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2401 transitions. Word has length 965 [2022-07-13 02:10:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:10:38,457 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 2401 transitions. [2022-07-13 02:10:38,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 02:10:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2401 transitions. [2022-07-13 02:10:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2022-07-13 02:10:38,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:10:38,470 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-13 02:10:38,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 02:10:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:10:38,683 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:10:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:10:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash 458233131, now seen corresponding path program 17 times [2022-07-13 02:10:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:10:38,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736468833] [2022-07-13 02:10:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:10:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:10:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:10:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:41,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:10:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:10:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 42958 proven. 846 refuted. 0 times theorem prover too weak. 51801 trivial. 0 not checked. [2022-07-13 02:10:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:10:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736468833] [2022-07-13 02:10:42,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736468833] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:10:42,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725129859] [2022-07-13 02:10:42,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:10:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:10:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:10:42,452 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:10:42,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 02:10:43,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-07-13 02:10:43,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:10:43,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-13 02:10:43,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:10:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 57808 proven. 3728 refuted. 0 times theorem prover too weak. 34069 trivial. 0 not checked. [2022-07-13 02:10:44,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:10:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 59019 proven. 2517 refuted. 0 times theorem prover too weak. 34069 trivial. 0 not checked. [2022-07-13 02:10:55,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725129859] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:10:55,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:10:55,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 61, 61] total 90 [2022-07-13 02:10:55,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90998961] [2022-07-13 02:10:55,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:10:55,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-07-13 02:10:55,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:10:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-07-13 02:10:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=7113, Unknown=0, NotChecked=0, Total=8010 [2022-07-13 02:10:55,863 INFO L87 Difference]: Start difference. First operand 2312 states and 2401 transitions. Second operand has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 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 02:11:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:11:01,031 INFO L93 Difference]: Finished difference Result 4111 states and 4269 transitions. [2022-07-13 02:11:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-07-13 02:11:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 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) Word has length 992 [2022-07-13 02:11:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:11:01,039 INFO L225 Difference]: With dead ends: 4111 [2022-07-13 02:11:01,039 INFO L226 Difference]: Without dead ends: 3122 [2022-07-13 02:11:01,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2234 GetRequests, 1999 SyntacticMatches, 3 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14884 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8603, Invalid=45919, Unknown=0, NotChecked=0, Total=54522 [2022-07-13 02:11:01,047 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 191 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 4713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:11:01,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 970 Invalid, 4713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 02:11:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-07-13 02:11:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2752. [2022-07-13 02:11:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2669 states have (on average 1.0363431997002623) internal successors, (2766), 2669 states have internal predecessors, (2766), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2022-07-13 02:11:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 2849 transitions. [2022-07-13 02:11:01,425 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 2849 transitions. Word has length 992 [2022-07-13 02:11:01,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:11:01,425 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 2849 transitions. [2022-07-13 02:11:01,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 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 02:11:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 2849 transitions. [2022-07-13 02:11:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-07-13 02:11:01,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:11:01,485 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-07-13 02:11:01,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-13 02:11:01,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:01,685 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-13 02:11:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:11:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1499498003, now seen corresponding path program 18 times [2022-07-13 02:11:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:11:01,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291410803] [2022-07-13 02:11:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:11:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:11:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 02:11:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:04,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:04,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 02:11:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:11:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 45682 proven. 975 refuted. 0 times theorem prover too weak. 55008 trivial. 0 not checked. [2022-07-13 02:11:05,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:11:05,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291410803] [2022-07-13 02:11:05,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291410803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:11:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31316667] [2022-07-13 02:11:05,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:11:05,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:11:05,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:11:05,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:11:05,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 02:11:06,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-07-13 02:11:06,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:11:06,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 02:11:06,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:11:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61582 trivial. 0 not checked. [2022-07-13 02:11:08,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:11:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61582 trivial. 0 not checked. [2022-07-13 02:11:11,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31316667] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:11:11,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:11:11,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2022-07-13 02:11:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311340273] [2022-07-13 02:11:11,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:11:11,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-07-13 02:11:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:11:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-07-13 02:11:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2022-07-13 02:11:11,517 INFO L87 Difference]: Start difference. First operand 2752 states and 2849 transitions. Second operand has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 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)