./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f4b24e32 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/Binomial.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 c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 13:46:54,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 13:46:54,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 13:46:54,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 13:46:54,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 13:46:54,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 13:46:54,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 13:46:54,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 13:46:54,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 13:46:54,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 13:46:54,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 13:46:54,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 13:46:54,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 13:46:54,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 13:46:54,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 13:46:54,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 13:46:54,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 13:46:54,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 13:46:54,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 13:46:54,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 13:46:54,847 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 13:46:54,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 13:46:54,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 13:46:54,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 13:46:54,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 13:46:54,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 13:46:54,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 13:46:54,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 13:46:54,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 13:46:54,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 13:46:54,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 13:46:54,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 13:46:54,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 13:46:54,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 13:46:54,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 13:46:54,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 13:46:54,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 13:46:54,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 13:46:54,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 13:46:54,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 13:46:54,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 13:46:54,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 13:46:54,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-14 13:46:54,901 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 13:46:54,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 13:46:54,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 13:46:54,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 13:46:54,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 13:46:54,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 13:46:54,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 13:46:54,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 13:46:54,903 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 13:46:54,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-14 13:46:54,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 13:46:54,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:46:54,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 13:46:54,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 13:46:54,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 13:46:54,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 13:46:54,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 13:46:54,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-07-14 13:46:55,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 13:46:55,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 13:46:55,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 13:46:55,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 13:46:55,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 13:46:55,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Binomial.c [2022-07-14 13:46:55,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6523d492/8ec58f7d0e0f4c4c9a6cf01e8435be2a/FLAGb2dbb3be2 [2022-07-14 13:46:55,617 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 13:46:55,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Binomial.c [2022-07-14 13:46:55,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6523d492/8ec58f7d0e0f4c4c9a6cf01e8435be2a/FLAGb2dbb3be2 [2022-07-14 13:46:55,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6523d492/8ec58f7d0e0f4c4c9a6cf01e8435be2a [2022-07-14 13:46:55,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 13:46:55,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 13:46:55,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 13:46:55,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 13:46:55,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 13:46:55,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1562a53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55, skipping insertion in model container [2022-07-14 13:46:55,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 13:46:55,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 13:46:55,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:46:55,808 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 13:46:55,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 13:46:55,840 INFO L208 MainTranslator]: Completed translation [2022-07-14 13:46:55,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55 WrapperNode [2022-07-14 13:46:55,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 13:46:55,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 13:46:55,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 13:46:55,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 13:46:55,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,878 INFO L137 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-07-14 13:46:55,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 13:46:55,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 13:46:55,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 13:46:55,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 13:46:55,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 13:46:55,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 13:46:55,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 13:46:55,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 13:46:55,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (1/1) ... [2022-07-14 13:46:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 13:46:55,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:55,929 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) [2022-07-14 13:46:55,942 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 [2022-07-14 13:46:55,968 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-07-14 13:46:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-07-14 13:46:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-07-14 13:46:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-07-14 13:46:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 13:46:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 13:46:56,010 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 13:46:56,012 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 13:46:56,161 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 13:46:56,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 13:46:56,168 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-14 13:46:56,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:56 BoogieIcfgContainer [2022-07-14 13:46:56,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 13:46:56,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 13:46:56,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 13:46:56,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 13:46:56,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:46:55" (1/3) ... [2022-07-14 13:46:56,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a4ba73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:56, skipping insertion in model container [2022-07-14 13:46:56,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:46:55" (2/3) ... [2022-07-14 13:46:56,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a4ba73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:46:56, skipping insertion in model container [2022-07-14 13:46:56,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:46:56" (3/3) ... [2022-07-14 13:46:56,195 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-07-14 13:46:56,206 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 13:46:56,207 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-07-14 13:46:56,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 13:46:56,302 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@7705ec79, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3599722d [2022-07-14 13:46:56,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-07-14 13:46:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-14 13:46:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 13:46:56,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:56,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:56,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:56,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2022-07-14 13:46:56,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:56,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17614769] [2022-07-14 13:46:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:46:56,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:56,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17614769] [2022-07-14 13:46:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17614769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:56,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:56,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:46:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151691589] [2022-07-14 13:46:56,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:56,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 13:46:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 13:46:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:46:56,478 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:56,499 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-07-14 13:46:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 13:46:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 13:46:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:56,506 INFO L225 Difference]: With dead ends: 114 [2022-07-14 13:46:56,507 INFO L226 Difference]: Without dead ends: 56 [2022-07-14 13:46:56,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 13:46:56,513 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:56,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:46:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-14 13:46:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-14 13:46:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.5) internal successors, (51), 47 states have internal predecessors, (51), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-14 13:46:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-07-14 13:46:56,550 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2022-07-14 13:46:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:56,550 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-07-14 13:46:56,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,551 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-07-14 13:46:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 13:46:56,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:56,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:56,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 13:46:56,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2022-07-14 13:46:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:56,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122255101] [2022-07-14 13:46:56,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:56,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:46:56,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:56,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122255101] [2022-07-14 13:46:56,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122255101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:56,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:56,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:46:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736124177] [2022-07-14 13:46:56,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:46:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:46:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:46:56,602 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:56,651 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-07-14 13:46:56,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:46:56,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 13:46:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:56,653 INFO L225 Difference]: With dead ends: 109 [2022-07-14 13:46:56,653 INFO L226 Difference]: Without dead ends: 57 [2022-07-14 13:46:56,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:56,656 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:56,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 141 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:46:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-14 13:46:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-14 13:46:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-14 13:46:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-07-14 13:46:56,667 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2022-07-14 13:46:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:56,667 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-07-14 13:46:56,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-07-14 13:46:56,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 13:46:56,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:56,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:56,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 13:46:56,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2022-07-14 13:46:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105675974] [2022-07-14 13:46:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:46:56,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:56,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105675974] [2022-07-14 13:46:56,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105675974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:56,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:56,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 13:46:56,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317918741] [2022-07-14 13:46:56,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:56,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 13:46:56,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:56,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 13:46:56,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:46:56,744 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:56,888 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2022-07-14 13:46:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:46:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 13:46:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:56,894 INFO L225 Difference]: With dead ends: 155 [2022-07-14 13:46:56,895 INFO L226 Difference]: Without dead ends: 102 [2022-07-14 13:46:56,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:46:56,897 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 329 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-14 13:46:56,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-07-14 13:46:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 71 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:46:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-07-14 13:46:56,916 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2022-07-14 13:46:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:56,917 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-07-14 13:46:56,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:56,917 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-07-14 13:46:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 13:46:56,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:56,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:56,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 13:46:56,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2022-07-14 13:46:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:56,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112964804] [2022-07-14 13:46:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:46:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112964804] [2022-07-14 13:46:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112964804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:56,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:56,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:46:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853962138] [2022-07-14 13:46:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:56,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:46:56,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:46:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:46:56,948 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:57,043 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-07-14 13:46:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:46:57,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 13:46:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:57,045 INFO L225 Difference]: With dead ends: 186 [2022-07-14 13:46:57,047 INFO L226 Difference]: Without dead ends: 105 [2022-07-14 13:46:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:57,053 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:57,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-14 13:46:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-07-14 13:46:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-14 13:46:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-07-14 13:46:57,085 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2022-07-14 13:46:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:57,086 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-07-14 13:46:57,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 13:46:57,086 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-07-14 13:46:57,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-14 13:46:57,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:57,087 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 13:46:57,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2022-07-14 13:46:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:57,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122002014] [2022-07-14 13:46:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 13:46:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 13:46:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122002014] [2022-07-14 13:46:57,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122002014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:57,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:57,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 13:46:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450698366] [2022-07-14 13:46:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 13:46:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 13:46:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:46:57,190 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:46:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:57,323 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-07-14 13:46:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:46:57,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-14 13:46:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:57,327 INFO L225 Difference]: With dead ends: 226 [2022-07-14 13:46:57,328 INFO L226 Difference]: Without dead ends: 145 [2022-07-14 13:46:57,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:46:57,346 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:57,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 309 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-14 13:46:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-07-14 13:46:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 100 states have internal predecessors, (125), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-14 13:46:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2022-07-14 13:46:57,388 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2022-07-14 13:46:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:57,391 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2022-07-14 13:46:57,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 13:46:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2022-07-14 13:46:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-14 13:46:57,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:57,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 13:46:57,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:57,395 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2022-07-14 13:46:57,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:57,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943363442] [2022-07-14 13:46:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 13:46:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 13:46:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 13:46:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943363442] [2022-07-14 13:46:57,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943363442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:57,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:57,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:46:57,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451879076] [2022-07-14 13:46:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:46:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:46:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:46:57,489 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:57,571 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2022-07-14 13:46:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:46:57,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-14 13:46:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:57,573 INFO L225 Difference]: With dead ends: 149 [2022-07-14 13:46:57,574 INFO L226 Difference]: Without dead ends: 148 [2022-07-14 13:46:57,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:46:57,575 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:57,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 259 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-07-14 13:46:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2022-07-14 13:46:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 100 states have internal predecessors, (124), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-14 13:46:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2022-07-14 13:46:57,605 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2022-07-14 13:46:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:57,605 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2022-07-14 13:46:57,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2022-07-14 13:46:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-14 13:46:57,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:57,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:57,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 13:46:57,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2022-07-14 13:46:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:57,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236572942] [2022-07-14 13:46:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 13:46:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 13:46:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 13:46:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:57,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236572942] [2022-07-14 13:46:57,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236572942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:57,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:57,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:46:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066835962] [2022-07-14 13:46:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:46:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:46:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:46:57,658 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:57,737 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2022-07-14 13:46:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:46:57,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-14 13:46:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:57,741 INFO L225 Difference]: With dead ends: 163 [2022-07-14 13:46:57,741 INFO L226 Difference]: Without dead ends: 162 [2022-07-14 13:46:57,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:46:57,742 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:57,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 246 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-14 13:46:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2022-07-14 13:46:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 111 states have internal predecessors, (137), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-14 13:46:57,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2022-07-14 13:46:57,755 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2022-07-14 13:46:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:57,759 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2022-07-14 13:46:57,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2022-07-14 13:46:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 13:46:57,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:57,760 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:57,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 13:46:57,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:57,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2022-07-14 13:46:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:57,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990259196] [2022-07-14 13:46:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:57,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 13:46:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-14 13:46:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 13:46:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990259196] [2022-07-14 13:46:57,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990259196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:57,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:57,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 13:46:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167605594] [2022-07-14 13:46:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:57,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:46:57,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:46:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:46:57,861 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:57,995 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2022-07-14 13:46:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:46:57,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-07-14 13:46:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:58,001 INFO L225 Difference]: With dead ends: 292 [2022-07-14 13:46:58,002 INFO L226 Difference]: Without dead ends: 168 [2022-07-14 13:46:58,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:46:58,004 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:58,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 342 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-14 13:46:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2022-07-14 13:46:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 114 states have internal predecessors, (140), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-14 13:46:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2022-07-14 13:46:58,027 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2022-07-14 13:46:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:58,027 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2022-07-14 13:46:58,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 13:46:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2022-07-14 13:46:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-14 13:46:58,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:58,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-14 13:46:58,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2022-07-14 13:46:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231144148] [2022-07-14 13:46:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:58,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:58,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:46:58,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408417222] [2022-07-14 13:46:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:58,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:58,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:58,060 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) [2022-07-14 13:46:58,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 13:46:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:58,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:46:58,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:46:58,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-14 13:46:58,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:46:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:58,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231144148] [2022-07-14 13:46:58,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:46:58,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408417222] [2022-07-14 13:46:58,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408417222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:58,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:58,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:46:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240110029] [2022-07-14 13:46:58,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:58,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:46:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:46:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:58,227 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:46:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:58,295 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2022-07-14 13:46:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:46:58,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-14 13:46:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:58,301 INFO L225 Difference]: With dead ends: 203 [2022-07-14 13:46:58,302 INFO L226 Difference]: Without dead ends: 201 [2022-07-14 13:46:58,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:58,303 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:58,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 206 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-14 13:46:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-07-14 13:46:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 121 states have (on average 1.3553719008264462) internal successors, (164), 133 states have internal predecessors, (164), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2022-07-14 13:46:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2022-07-14 13:46:58,329 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2022-07-14 13:46:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:58,330 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2022-07-14 13:46:58,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 13:46:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2022-07-14 13:46:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 13:46:58,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:58,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:58,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-14 13:46:58,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:58,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:58,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2022-07-14 13:46:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717397752] [2022-07-14 13:46:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:58,561 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:46:58,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508287100] [2022-07-14 13:46:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:58,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:58,568 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) [2022-07-14 13:46:58,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 13:46:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:58,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:46:58,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:46:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-14 13:46:58,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:46:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717397752] [2022-07-14 13:46:59,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:46:59,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508287100] [2022-07-14 13:46:59,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508287100] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:46:59,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:46:59,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-07-14 13:46:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308579441] [2022-07-14 13:46:59,155 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:46:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 13:46:59,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 13:46:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:46:59,156 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-14 13:46:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:59,236 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2022-07-14 13:46:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 13:46:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-07-14 13:46:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:59,239 INFO L225 Difference]: With dead ends: 257 [2022-07-14 13:46:59,240 INFO L226 Difference]: Without dead ends: 255 [2022-07-14 13:46:59,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:46:59,240 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:59,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 172 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:46:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-14 13:46:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-07-14 13:46:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.3) internal successors, (195), 159 states have internal predecessors, (195), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2022-07-14 13:46:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-07-14 13:46:59,262 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2022-07-14 13:46:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:59,262 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-07-14 13:46:59,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-14 13:46:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-07-14 13:46:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-14 13:46:59,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:59,263 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:59,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 13:46:59,476 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,SelfDestructingSolverStorable9 [2022-07-14 13:46:59,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2022-07-14 13:46:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:59,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372772029] [2022-07-14 13:46:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:59,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:46:59,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166495063] [2022-07-14 13:46:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:59,490 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) [2022-07-14 13:46:59,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 13:46:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:59,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:46:59,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:46:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:46:59,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:46:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:59,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372772029] [2022-07-14 13:46:59,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:46:59,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166495063] [2022-07-14 13:46:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166495063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:59,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:46:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723705079] [2022-07-14 13:46:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:46:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:46:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:46:59,555 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:46:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:59,585 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2022-07-14 13:46:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:46:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2022-07-14 13:46:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:59,588 INFO L225 Difference]: With dead ends: 217 [2022-07-14 13:46:59,588 INFO L226 Difference]: Without dead ends: 216 [2022-07-14 13:46:59,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:59,589 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:59,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:46:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-14 13:46:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2022-07-14 13:46:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 157 states have (on average 1.286624203821656) internal successors, (202), 164 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-07-14 13:46:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-14 13:46:59,603 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2022-07-14 13:46:59,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:59,603 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-14 13:46:59,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:46:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-14 13:46:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-14 13:46:59,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:59,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:59,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 13:46:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:59,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:46:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:46:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2022-07-14 13:46:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:46:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134728495] [2022-07-14 13:46:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:46:59,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:46:59,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429581567] [2022-07-14 13:46:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:46:59,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:46:59,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:46:59,842 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) [2022-07-14 13:46:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 13:46:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:46:59,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:46:59,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:46:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:46:59,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:46:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:46:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134728495] [2022-07-14 13:46:59,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:46:59,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429581567] [2022-07-14 13:46:59,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429581567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:46:59,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:46:59,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:46:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899338437] [2022-07-14 13:46:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:46:59,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:46:59,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:46:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:46:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:46:59,901 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:46:59,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:46:59,925 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2022-07-14 13:46:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:46:59,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-14 13:46:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:46:59,928 INFO L225 Difference]: With dead ends: 213 [2022-07-14 13:46:59,928 INFO L226 Difference]: Without dead ends: 212 [2022-07-14 13:46:59,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:46:59,929 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:46:59,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 148 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:46:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-14 13:46:59,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-07-14 13:46:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 157 states have (on average 1.2738853503184713) internal successors, (200), 163 states have internal predecessors, (200), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-07-14 13:46:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2022-07-14 13:46:59,943 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2022-07-14 13:46:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:46:59,943 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2022-07-14 13:46:59,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:46:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2022-07-14 13:46:59,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 13:46:59,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:46:59,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:46:59,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:00,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2022-07-14 13:47:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:00,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465706776] [2022-07-14 13:47:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:00,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:00,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167167163] [2022-07-14 13:47:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:00,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:00,180 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) [2022-07-14 13:47:00,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-14 13:47:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:00,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:47:00,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 13:47:00,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465706776] [2022-07-14 13:47:00,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167167163] [2022-07-14 13:47:00,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167167163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:00,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:00,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:47:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795832481] [2022-07-14 13:47:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:00,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:47:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:47:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:47:00,255 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:47:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:00,284 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2022-07-14 13:47:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:47:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2022-07-14 13:47:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:00,286 INFO L225 Difference]: With dead ends: 218 [2022-07-14 13:47:00,286 INFO L226 Difference]: Without dead ends: 217 [2022-07-14 13:47:00,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:47:00,289 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:00,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-14 13:47:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2022-07-14 13:47:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.270440251572327) internal successors, (202), 165 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-07-14 13:47:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2022-07-14 13:47:00,304 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2022-07-14 13:47:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:00,304 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2022-07-14 13:47:00,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:47:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2022-07-14 13:47:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-14 13:47:00,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:00,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:00,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:00,506 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,SelfDestructingSolverStorable12 [2022-07-14 13:47:00,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2022-07-14 13:47:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:00,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541720022] [2022-07-14 13:47:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:00,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:00,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144545672] [2022-07-14 13:47:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:00,516 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) [2022-07-14 13:47:00,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-14 13:47:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:00,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 13:47:00,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 13:47:00,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:00,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541720022] [2022-07-14 13:47:00,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:00,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144545672] [2022-07-14 13:47:00,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144545672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:00,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:00,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 13:47:00,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092047345] [2022-07-14 13:47:00,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:00,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 13:47:00,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:00,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 13:47:00,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 13:47:00,604 INFO L87 Difference]: Start difference. First operand 214 states and 285 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:47:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:00,627 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2022-07-14 13:47:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 13:47:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-07-14 13:47:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:00,629 INFO L225 Difference]: With dead ends: 214 [2022-07-14 13:47:00,629 INFO L226 Difference]: Without dead ends: 213 [2022-07-14 13:47:00,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:47:00,630 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 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 [2022-07-14 13:47:00,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-14 13:47:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-14 13:47:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 164 states have internal predecessors, (201), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2022-07-14 13:47:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2022-07-14 13:47:00,642 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2022-07-14 13:47:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2022-07-14 13:47:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 13:47:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2022-07-14 13:47:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 13:47:00,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:00,646 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:00,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:00,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:00,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2022-07-14 13:47:00,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:00,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872445461] [2022-07-14 13:47:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:00,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319245201] [2022-07-14 13:47:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:00,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:00,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:00,869 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) [2022-07-14 13:47:00,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-14 13:47:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:00,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:47:00,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:47:00,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:47:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:01,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872445461] [2022-07-14 13:47:01,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:01,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319245201] [2022-07-14 13:47:01,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319245201] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:01,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:01,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-14 13:47:01,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459964729] [2022-07-14 13:47:01,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 13:47:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 13:47:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:01,082 INFO L87 Difference]: Start difference. First operand 213 states and 284 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:01,428 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2022-07-14 13:47:01,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:47:01,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2022-07-14 13:47:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:01,430 INFO L225 Difference]: With dead ends: 316 [2022-07-14 13:47:01,430 INFO L226 Difference]: Without dead ends: 315 [2022-07-14 13:47:01,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:47:01,431 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:01,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 589 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-14 13:47:01,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2022-07-14 13:47:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 209 states have (on average 1.30622009569378) internal successors, (273), 216 states have internal predecessors, (273), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2022-07-14 13:47:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-07-14 13:47:01,447 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2022-07-14 13:47:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:01,447 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-07-14 13:47:01,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-07-14 13:47:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-14 13:47:01,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:01,449 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:01,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:01,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:01,672 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:01,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2022-07-14 13:47:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:01,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069177627] [2022-07-14 13:47:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:01,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:01,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919620541] [2022-07-14 13:47:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:01,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:01,680 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) [2022-07-14 13:47:01,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-14 13:47:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:01,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 13:47:01,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-14 13:47:01,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:01,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069177627] [2022-07-14 13:47:01,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:01,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919620541] [2022-07-14 13:47:01,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919620541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:01,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:01,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 13:47:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934052412] [2022-07-14 13:47:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 13:47:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 13:47:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:47:01,734 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 13:47:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:01,750 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-07-14 13:47:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 13:47:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2022-07-14 13:47:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:01,752 INFO L225 Difference]: With dead ends: 278 [2022-07-14 13:47:01,752 INFO L226 Difference]: Without dead ends: 277 [2022-07-14 13:47:01,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 13:47:01,753 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:01,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-14 13:47:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-14 13:47:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 209 states have (on average 1.291866028708134) internal successors, (270), 215 states have internal predecessors, (270), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2022-07-14 13:47:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2022-07-14 13:47:01,767 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2022-07-14 13:47:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:01,768 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2022-07-14 13:47:01,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-14 13:47:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2022-07-14 13:47:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 13:47:01,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:01,770 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:01,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:01,983 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,SelfDestructingSolverStorable15 [2022-07-14 13:47:01,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2022-07-14 13:47:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:01,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20383789] [2022-07-14 13:47:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:01,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:01,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:01,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493613703] [2022-07-14 13:47:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:01,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:01,992 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) [2022-07-14 13:47:01,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-14 13:47:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 13:47:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 13:47:02,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20383789] [2022-07-14 13:47:02,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493613703] [2022-07-14 13:47:02,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493613703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:02,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:02,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 13:47:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84157718] [2022-07-14 13:47:02,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:47:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:47:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:47:02,084 INFO L87 Difference]: Start difference. First operand 277 states and 381 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:02,139 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-07-14 13:47:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:47:02,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-07-14 13:47:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:02,141 INFO L225 Difference]: With dead ends: 496 [2022-07-14 13:47:02,141 INFO L226 Difference]: Without dead ends: 253 [2022-07-14 13:47:02,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:47:02,142 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:02,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-14 13:47:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-07-14 13:47:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 196 states have internal predecessors, (242), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2022-07-14 13:47:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-07-14 13:47:02,154 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2022-07-14 13:47:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:02,154 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-07-14 13:47:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-07-14 13:47:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-14 13:47:02,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:02,155 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:02,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:02,377 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,SelfDestructingSolverStorable16 [2022-07-14 13:47:02,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2022-07-14 13:47:02,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:02,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460936209] [2022-07-14 13:47:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:02,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:02,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:02,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440838923] [2022-07-14 13:47:02,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:02,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:02,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:02,386 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) [2022-07-14 13:47:02,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-14 13:47:02,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:02,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:02,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:47:02,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 13:47:02,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460936209] [2022-07-14 13:47:02,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440838923] [2022-07-14 13:47:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440838923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:02,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:02,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 13:47:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408204694] [2022-07-14 13:47:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:47:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:47:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:47:02,477 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:02,603 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2022-07-14 13:47:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:47:02,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-07-14 13:47:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:02,606 INFO L225 Difference]: With dead ends: 516 [2022-07-14 13:47:02,606 INFO L226 Difference]: Without dead ends: 303 [2022-07-14 13:47:02,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:47:02,608 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:02,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 345 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-14 13:47:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2022-07-14 13:47:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 223 states have (on average 1.3094170403587444) internal successors, (292), 228 states have internal predecessors, (292), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2022-07-14 13:47:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2022-07-14 13:47:02,636 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2022-07-14 13:47:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2022-07-14 13:47:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2022-07-14 13:47:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-14 13:47:02,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:02,637 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:02,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:02,855 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,SelfDestructingSolverStorable17 [2022-07-14 13:47:02,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2022-07-14 13:47:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:02,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483240603] [2022-07-14 13:47:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:02,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:02,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990376264] [2022-07-14 13:47:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:02,863 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) [2022-07-14 13:47:02,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 13:47:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:02,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:47:02,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:47:02,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:47:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483240603] [2022-07-14 13:47:03,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:03,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990376264] [2022-07-14 13:47:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990376264] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:03,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:03,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-14 13:47:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936399430] [2022-07-14 13:47:03,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:03,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 13:47:03,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 13:47:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:47:03,077 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:03,279 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2022-07-14 13:47:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 13:47:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2022-07-14 13:47:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:03,281 INFO L225 Difference]: With dead ends: 533 [2022-07-14 13:47:03,282 INFO L226 Difference]: Without dead ends: 323 [2022-07-14 13:47:03,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-07-14 13:47:03,283 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:03,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 469 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-14 13:47:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-07-14 13:47:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 233 states have (on average 1.3047210300429184) internal successors, (304), 238 states have internal predecessors, (304), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2022-07-14 13:47:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-07-14 13:47:03,296 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2022-07-14 13:47:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:03,296 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-07-14 13:47:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-14 13:47:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-07-14 13:47:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 13:47:03,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:03,297 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:03,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:03,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:03,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:03,512 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2022-07-14 13:47:03,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:03,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141828050] [2022-07-14 13:47:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:03,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:03,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765631677] [2022-07-14 13:47:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:03,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:03,519 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) [2022-07-14 13:47:03,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-14 13:47:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:03,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 13:47:03,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 13:47:03,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 13:47:03,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:03,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141828050] [2022-07-14 13:47:03,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:03,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765631677] [2022-07-14 13:47:03,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765631677] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:03,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:03,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-07-14 13:47:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255319346] [2022-07-14 13:47:03,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:03,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:47:03,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:47:03,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:47:03,820 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-14 13:47:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:04,276 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2022-07-14 13:47:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 13:47:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 55 [2022-07-14 13:47:04,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:04,278 INFO L225 Difference]: With dead ends: 606 [2022-07-14 13:47:04,278 INFO L226 Difference]: Without dead ends: 392 [2022-07-14 13:47:04,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-07-14 13:47:04,280 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:04,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 774 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 580 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2022-07-14 13:47:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-14 13:47:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2022-07-14 13:47:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 281 states have internal predecessors, (365), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 66 states have call predecessors, (85), 52 states have call successors, (85) [2022-07-14 13:47:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2022-07-14 13:47:04,298 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2022-07-14 13:47:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:04,299 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2022-07-14 13:47:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-14 13:47:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2022-07-14 13:47:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-14 13:47:04,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:04,299 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:04,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:04,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:04,515 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2022-07-14 13:47:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037339499] [2022-07-14 13:47:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:04,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:04,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984006205] [2022-07-14 13:47:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:04,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:04,526 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) [2022-07-14 13:47:04,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-14 13:47:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:47:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-14 13:47:04,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-14 13:47:04,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037339499] [2022-07-14 13:47:04,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:04,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984006205] [2022-07-14 13:47:04,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984006205] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:04,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:04,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-07-14 13:47:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444891991] [2022-07-14 13:47:04,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 13:47:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 13:47:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:47:04,670 INFO L87 Difference]: Start difference. First operand 364 states and 502 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 13:47:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:04,858 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2022-07-14 13:47:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 13:47:04,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2022-07-14 13:47:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:04,860 INFO L225 Difference]: With dead ends: 706 [2022-07-14 13:47:04,860 INFO L226 Difference]: Without dead ends: 382 [2022-07-14 13:47:04,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:04,862 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 71 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:04,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 459 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-14 13:47:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2022-07-14 13:47:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.2892857142857144) internal successors, (361), 281 states have internal predecessors, (361), 52 states have call successors, (52), 17 states have call predecessors, (52), 20 states have return successors, (83), 64 states have call predecessors, (83), 52 states have call successors, (83) [2022-07-14 13:47:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2022-07-14 13:47:04,875 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2022-07-14 13:47:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:04,875 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2022-07-14 13:47:04,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 13:47:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2022-07-14 13:47:04,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-14 13:47:04,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:04,876 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:04,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:05,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-14 13:47:05,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2022-07-14 13:47:05,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:05,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628583549] [2022-07-14 13:47:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:05,102 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:05,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932821904] [2022-07-14 13:47:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:05,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:05,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:05,105 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) [2022-07-14 13:47:05,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-14 13:47:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:47:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 13:47:05,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:05,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:05,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628583549] [2022-07-14 13:47:05,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:05,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932821904] [2022-07-14 13:47:05,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932821904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:05,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:05,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 13:47:05,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182841898] [2022-07-14 13:47:05,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 13:47:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 13:47:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:47:05,183 INFO L87 Difference]: Start difference. First operand 363 states and 496 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 13:47:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:05,264 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2022-07-14 13:47:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:47:05,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-07-14 13:47:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:05,266 INFO L225 Difference]: With dead ends: 683 [2022-07-14 13:47:05,266 INFO L226 Difference]: Without dead ends: 369 [2022-07-14 13:47:05,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:47:05,268 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:05,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 341 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-14 13:47:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2022-07-14 13:47:05,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.2779783393501805) internal successors, (354), 278 states have internal predecessors, (354), 50 states have call successors, (50), 18 states have call predecessors, (50), 21 states have return successors, (77), 62 states have call predecessors, (77), 50 states have call successors, (77) [2022-07-14 13:47:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2022-07-14 13:47:05,281 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2022-07-14 13:47:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:05,282 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2022-07-14 13:47:05,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 13:47:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2022-07-14 13:47:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-14 13:47:05,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:05,283 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:05,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:05,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:05,496 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2022-07-14 13:47:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018876489] [2022-07-14 13:47:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:05,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:05,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500520631] [2022-07-14 13:47:05,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:05,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:05,505 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) [2022-07-14 13:47:05,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-14 13:47:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:05,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:47:05,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 13:47:05,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 13:47:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018876489] [2022-07-14 13:47:05,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500520631] [2022-07-14 13:47:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500520631] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:05,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-14 13:47:05,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206752785] [2022-07-14 13:47:05,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:47:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:47:05,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:05,732 INFO L87 Difference]: Start difference. First operand 359 states and 481 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:05,994 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2022-07-14 13:47:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 13:47:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 66 [2022-07-14 13:47:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:05,996 INFO L225 Difference]: With dead ends: 442 [2022-07-14 13:47:05,996 INFO L226 Difference]: Without dead ends: 441 [2022-07-14 13:47:05,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:47:05,997 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:05,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 569 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-14 13:47:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2022-07-14 13:47:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.279503105590062) internal successors, (412), 322 states have internal predecessors, (412), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2022-07-14 13:47:06,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2022-07-14 13:47:06,014 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2022-07-14 13:47:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:06,014 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2022-07-14 13:47:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2022-07-14 13:47:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-14 13:47:06,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:06,015 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:06,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:06,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:06,231 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:06,232 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2022-07-14 13:47:06,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:06,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946716687] [2022-07-14 13:47:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:06,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:06,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416937864] [2022-07-14 13:47:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:06,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:06,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:06,240 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) [2022-07-14 13:47:06,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-14 13:47:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:47:06,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-14 13:47:06,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:06,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946716687] [2022-07-14 13:47:06,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416937864] [2022-07-14 13:47:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416937864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:06,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:06,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 13:47:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465727535] [2022-07-14 13:47:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:47:06,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:47:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:47:06,366 INFO L87 Difference]: Start difference. First operand 418 states and 572 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 13:47:06,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:06,473 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2022-07-14 13:47:06,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 13:47:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-14 13:47:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:06,475 INFO L225 Difference]: With dead ends: 425 [2022-07-14 13:47:06,475 INFO L226 Difference]: Without dead ends: 424 [2022-07-14 13:47:06,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:47:06,477 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:06,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 331 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-14 13:47:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-07-14 13:47:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.2732919254658386) internal successors, (410), 322 states have internal predecessors, (410), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2022-07-14 13:47:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2022-07-14 13:47:06,502 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2022-07-14 13:47:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:06,502 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2022-07-14 13:47:06,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 13:47:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2022-07-14 13:47:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-14 13:47:06,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:06,503 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:06,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:06,719 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,SelfDestructingSolverStorable23 [2022-07-14 13:47:06,719 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:06,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:06,720 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2022-07-14 13:47:06,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:06,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45999563] [2022-07-14 13:47:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:06,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:06,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928408208] [2022-07-14 13:47:06,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:06,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:06,728 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) [2022-07-14 13:47:06,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-14 13:47:06,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:06,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:47:06,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-14 13:47:06,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-14 13:47:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45999563] [2022-07-14 13:47:07,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928408208] [2022-07-14 13:47:07,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928408208] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:07,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:07,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-14 13:47:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278228142] [2022-07-14 13:47:07,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 13:47:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 13:47:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:07,001 INFO L87 Difference]: Start difference. First operand 418 states and 570 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:07,275 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2022-07-14 13:47:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 13:47:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 71 [2022-07-14 13:47:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:07,278 INFO L225 Difference]: With dead ends: 478 [2022-07-14 13:47:07,278 INFO L226 Difference]: Without dead ends: 477 [2022-07-14 13:47:07,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:47:07,279 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:07,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-14 13:47:07,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2022-07-14 13:47:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.2701949860724233) internal successors, (456), 361 states have internal predecessors, (456), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2022-07-14 13:47:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2022-07-14 13:47:07,296 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2022-07-14 13:47:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:07,296 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2022-07-14 13:47:07,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2022-07-14 13:47:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-14 13:47:07,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:07,297 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:07,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:07,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:07,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2022-07-14 13:47:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:07,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766437004] [2022-07-14 13:47:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:07,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:07,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33907339] [2022-07-14 13:47:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:07,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:07,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:07,530 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) [2022-07-14 13:47:07,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-14 13:47:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:07,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 13:47:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-14 13:47:07,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766437004] [2022-07-14 13:47:07,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33907339] [2022-07-14 13:47:07,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33907339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:07,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:07,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 13:47:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054355915] [2022-07-14 13:47:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:07,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 13:47:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 13:47:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-14 13:47:07,661 INFO L87 Difference]: Start difference. First operand 466 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:07,855 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2022-07-14 13:47:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:47:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-14 13:47:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:07,858 INFO L225 Difference]: With dead ends: 875 [2022-07-14 13:47:07,858 INFO L226 Difference]: Without dead ends: 466 [2022-07-14 13:47:07,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:07,860 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 60 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:07,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 271 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-07-14 13:47:07,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-07-14 13:47:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 352 states have (on average 1.2727272727272727) internal successors, (448), 355 states have internal predecessors, (448), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2022-07-14 13:47:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2022-07-14 13:47:07,879 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2022-07-14 13:47:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:07,879 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2022-07-14 13:47:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2022-07-14 13:47:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-14 13:47:07,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:07,880 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:07,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:08,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:08,099 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:08,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2022-07-14 13:47:08,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:08,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922639897] [2022-07-14 13:47:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:08,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:08,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:08,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601260784] [2022-07-14 13:47:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:08,108 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) [2022-07-14 13:47:08,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-14 13:47:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 13:47:08,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-14 13:47:08,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-14 13:47:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922639897] [2022-07-14 13:47:08,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601260784] [2022-07-14 13:47:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601260784] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:08,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:08,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-07-14 13:47:08,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819827913] [2022-07-14 13:47:08,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 13:47:08,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:08,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 13:47:08,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:47:08,443 INFO L87 Difference]: Start difference. First operand 458 states and 615 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-14 13:47:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:08,998 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2022-07-14 13:47:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-14 13:47:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 79 [2022-07-14 13:47:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:09,001 INFO L225 Difference]: With dead ends: 538 [2022-07-14 13:47:09,001 INFO L226 Difference]: Without dead ends: 537 [2022-07-14 13:47:09,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2022-07-14 13:47:09,002 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 180 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:09,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 626 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 602 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2022-07-14 13:47:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-07-14 13:47:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 506. [2022-07-14 13:47:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 391 states have (on average 1.2659846547314577) internal successors, (495), 391 states have internal predecessors, (495), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2022-07-14 13:47:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 673 transitions. [2022-07-14 13:47:09,021 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 673 transitions. Word has length 79 [2022-07-14 13:47:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:09,022 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 673 transitions. [2022-07-14 13:47:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-14 13:47:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 673 transitions. [2022-07-14 13:47:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-14 13:47:09,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:09,023 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:09,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:09,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:09,245 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:09,246 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2022-07-14 13:47:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:09,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000687332] [2022-07-14 13:47:09,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:09,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:09,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:09,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808215637] [2022-07-14 13:47:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:09,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:09,254 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) [2022-07-14 13:47:09,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-14 13:47:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:09,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 13:47:09,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-14 13:47:09,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000687332] [2022-07-14 13:47:09,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808215637] [2022-07-14 13:47:09,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808215637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:09,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:09,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 13:47:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473520565] [2022-07-14 13:47:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:09,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:47:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:47:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:47:09,336 INFO L87 Difference]: Start difference. First operand 506 states and 673 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 13:47:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:09,373 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2022-07-14 13:47:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:47:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2022-07-14 13:47:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:09,375 INFO L225 Difference]: With dead ends: 508 [2022-07-14 13:47:09,375 INFO L226 Difference]: Without dead ends: 507 [2022-07-14 13:47:09,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:47:09,376 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 8 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:09,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-14 13:47:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2022-07-14 13:47:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 391 states have (on average 1.2404092071611252) internal successors, (485), 390 states have internal predecessors, (485), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2022-07-14 13:47:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2022-07-14 13:47:09,395 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 80 [2022-07-14 13:47:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:09,395 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2022-07-14 13:47:09,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 13:47:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2022-07-14 13:47:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-14 13:47:09,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:09,397 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:09,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-14 13:47:09,619 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2022-07-14 13:47:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:09,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169831554] [2022-07-14 13:47:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:09,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:09,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90824132] [2022-07-14 13:47:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:09,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:09,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:09,628 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:09,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-14 13:47:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:09,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:47:09,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-14 13:47:09,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169831554] [2022-07-14 13:47:09,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90824132] [2022-07-14 13:47:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90824132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:09,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:09,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-07-14 13:47:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232130109] [2022-07-14 13:47:09,724 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:47:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:47:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:47:09,725 INFO L87 Difference]: Start difference. First operand 505 states and 663 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 13:47:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:09,773 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2022-07-14 13:47:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:47:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2022-07-14 13:47:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:09,776 INFO L225 Difference]: With dead ends: 543 [2022-07-14 13:47:09,777 INFO L226 Difference]: Without dead ends: 542 [2022-07-14 13:47:09,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 13:47:09,777 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:09,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 192 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-14 13:47:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2022-07-14 13:47:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 403 states have (on average 1.2258064516129032) internal successors, (494), 396 states have internal predecessors, (494), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 92 states have call predecessors, (109), 69 states have call successors, (109) [2022-07-14 13:47:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2022-07-14 13:47:09,796 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 84 [2022-07-14 13:47:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:09,812 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2022-07-14 13:47:09,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 13:47:09,812 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2022-07-14 13:47:09,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-14 13:47:09,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:09,813 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:09,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-14 13:47:10,035 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2022-07-14 13:47:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:10,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61883558] [2022-07-14 13:47:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:10,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:10,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835602524] [2022-07-14 13:47:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:10,047 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:10,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-14 13:47:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:10,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:47:10,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-14 13:47:10,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:10,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61883558] [2022-07-14 13:47:10,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:10,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835602524] [2022-07-14 13:47:10,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835602524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:10,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:10,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 13:47:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703586836] [2022-07-14 13:47:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:10,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:47:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:10,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:47:10,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:47:10,202 INFO L87 Difference]: Start difference. First operand 517 states and 672 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:10,276 INFO L93 Difference]: Finished difference Result 519 states and 675 transitions. [2022-07-14 13:47:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 13:47:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-07-14 13:47:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:10,279 INFO L225 Difference]: With dead ends: 519 [2022-07-14 13:47:10,279 INFO L226 Difference]: Without dead ends: 518 [2022-07-14 13:47:10,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:47:10,280 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:10,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 204 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-14 13:47:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 495. [2022-07-14 13:47:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 382 states have (on average 1.2146596858638743) internal successors, (464), 381 states have internal predecessors, (464), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 85 states have call predecessors, (109), 69 states have call successors, (109) [2022-07-14 13:47:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 642 transitions. [2022-07-14 13:47:10,298 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 642 transitions. Word has length 85 [2022-07-14 13:47:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:10,298 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 642 transitions. [2022-07-14 13:47:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 642 transitions. [2022-07-14 13:47:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-14 13:47:10,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:10,300 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:10,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:10,522 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:10,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2022-07-14 13:47:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709617868] [2022-07-14 13:47:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:10,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:10,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920021478] [2022-07-14 13:47:10,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:10,531 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:10,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-14 13:47:10,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:10,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:10,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:47:10,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-14 13:47:10,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:10,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709617868] [2022-07-14 13:47:10,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920021478] [2022-07-14 13:47:10,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920021478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:10,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:10,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 13:47:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540567415] [2022-07-14 13:47:10,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:10,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:47:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:47:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:47:10,727 INFO L87 Difference]: Start difference. First operand 495 states and 642 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-14 13:47:10,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:10,790 INFO L93 Difference]: Finished difference Result 497 states and 645 transitions. [2022-07-14 13:47:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:47:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2022-07-14 13:47:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:10,797 INFO L225 Difference]: With dead ends: 497 [2022-07-14 13:47:10,798 INFO L226 Difference]: Without dead ends: 495 [2022-07-14 13:47:10,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-14 13:47:10,798 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 26 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:10,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 191 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-14 13:47:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2022-07-14 13:47:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 334 states have (on average 1.1706586826347305) internal successors, (391), 333 states have internal predecessors, (391), 59 states have call successors, (59), 28 states have call predecessors, (59), 32 states have return successors, (74), 70 states have call predecessors, (74), 59 states have call successors, (74) [2022-07-14 13:47:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2022-07-14 13:47:10,821 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 86 [2022-07-14 13:47:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:10,822 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2022-07-14 13:47:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-14 13:47:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2022-07-14 13:47:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-14 13:47:10,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:10,823 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:10,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-14 13:47:11,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:11,045 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash 253172159, now seen corresponding path program 2 times [2022-07-14 13:47:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:11,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776190219] [2022-07-14 13:47:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:11,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:11,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:11,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948495216] [2022-07-14 13:47:11,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:11,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:11,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:11,053 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:11,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-14 13:47:11,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:11,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:11,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:47:11,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-14 13:47:11,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-14 13:47:11,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776190219] [2022-07-14 13:47:11,399 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948495216] [2022-07-14 13:47:11,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948495216] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:11,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:11,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-07-14 13:47:11,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817376171] [2022-07-14 13:47:11,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:11,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 13:47:11,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 13:47:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:47:11,402 INFO L87 Difference]: Start difference. First operand 432 states and 524 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-14 13:47:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:11,863 INFO L93 Difference]: Finished difference Result 831 states and 1028 transitions. [2022-07-14 13:47:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 13:47:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 89 [2022-07-14 13:47:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:11,866 INFO L225 Difference]: With dead ends: 831 [2022-07-14 13:47:11,866 INFO L226 Difference]: Without dead ends: 459 [2022-07-14 13:47:11,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:47:11,868 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:11,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 647 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:47:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-14 13:47:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-07-14 13:47:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 335 states have (on average 1.164179104477612) internal successors, (390), 335 states have internal predecessors, (390), 59 states have call successors, (59), 30 states have call predecessors, (59), 33 states have return successors, (72), 68 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-14 13:47:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2022-07-14 13:47:11,885 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 89 [2022-07-14 13:47:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2022-07-14 13:47:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-14 13:47:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2022-07-14 13:47:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-14 13:47:11,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:11,887 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:11,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:12,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:12,109 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2022-07-14 13:47:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456531025] [2022-07-14 13:47:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:12,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:12,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194786726] [2022-07-14 13:47:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:12,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:12,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:12,124 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:12,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-14 13:47:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:47:12,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-14 13:47:12,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-14 13:47:12,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456531025] [2022-07-14 13:47:12,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:12,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194786726] [2022-07-14 13:47:12,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194786726] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:12,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:12,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-14 13:47:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150271517] [2022-07-14 13:47:12,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 13:47:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 13:47:12,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:12,364 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:12,633 INFO L93 Difference]: Finished difference Result 585 states and 719 transitions. [2022-07-14 13:47:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:47:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2022-07-14 13:47:12,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:12,635 INFO L225 Difference]: With dead ends: 585 [2022-07-14 13:47:12,635 INFO L226 Difference]: Without dead ends: 582 [2022-07-14 13:47:12,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:47:12,636 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 138 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:12,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 467 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-07-14 13:47:12,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 554. [2022-07-14 13:47:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.1790697674418604) internal successors, (507), 430 states have internal predecessors, (507), 78 states have call successors, (78), 36 states have call predecessors, (78), 39 states have return successors, (91), 87 states have call predecessors, (91), 78 states have call successors, (91) [2022-07-14 13:47:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 676 transitions. [2022-07-14 13:47:12,670 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 676 transitions. Word has length 106 [2022-07-14 13:47:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:12,671 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 676 transitions. [2022-07-14 13:47:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 676 transitions. [2022-07-14 13:47:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 13:47:12,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:12,673 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:12,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-14 13:47:12,896 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:12,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:12,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2022-07-14 13:47:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131462416] [2022-07-14 13:47:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:12,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:12,903 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:12,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100074778] [2022-07-14 13:47:12,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:12,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:12,905 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:12,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-14 13:47:12,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:12,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:12,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 13:47:12,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-14 13:47:13,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:13,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131462416] [2022-07-14 13:47:13,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:13,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100074778] [2022-07-14 13:47:13,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100074778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:13,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:13,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 13:47:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512689907] [2022-07-14 13:47:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:13,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 13:47:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 13:47:13,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:47:13,007 INFO L87 Difference]: Start difference. First operand 554 states and 676 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 13:47:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:13,093 INFO L93 Difference]: Finished difference Result 878 states and 1076 transitions. [2022-07-14 13:47:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 13:47:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 112 [2022-07-14 13:47:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:13,095 INFO L225 Difference]: With dead ends: 878 [2022-07-14 13:47:13,095 INFO L226 Difference]: Without dead ends: 487 [2022-07-14 13:47:13,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 13:47:13,097 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:13,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 236 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-14 13:47:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2022-07-14 13:47:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 378 states have (on average 1.1587301587301588) internal successors, (438), 378 states have internal predecessors, (438), 65 states have call successors, (65), 33 states have call predecessors, (65), 36 states have return successors, (76), 74 states have call predecessors, (76), 65 states have call successors, (76) [2022-07-14 13:47:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 579 transitions. [2022-07-14 13:47:13,115 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 579 transitions. Word has length 112 [2022-07-14 13:47:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:13,115 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 579 transitions. [2022-07-14 13:47:13,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 13:47:13,116 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 579 transitions. [2022-07-14 13:47:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-14 13:47:13,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:13,117 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:13,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:13,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-14 13:47:13,331 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:13,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2022-07-14 13:47:13,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:13,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974275013] [2022-07-14 13:47:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:13,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:13,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:13,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303694918] [2022-07-14 13:47:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:13,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:13,340 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:13,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-14 13:47:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:13,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 13:47:13,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-14 13:47:13,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-14 13:47:13,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974275013] [2022-07-14 13:47:13,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303694918] [2022-07-14 13:47:13,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303694918] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:13,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:13,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-07-14 13:47:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879563199] [2022-07-14 13:47:13,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:47:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:13,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:47:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:47:13,788 INFO L87 Difference]: Start difference. First operand 486 states and 579 transitions. Second operand has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:14,612 INFO L93 Difference]: Finished difference Result 874 states and 1068 transitions. [2022-07-14 13:47:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 13:47:14,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2022-07-14 13:47:14,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:14,613 INFO L225 Difference]: With dead ends: 874 [2022-07-14 13:47:14,614 INFO L226 Difference]: Without dead ends: 529 [2022-07-14 13:47:14,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:47:14,615 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 118 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:14,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 808 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 587 Invalid, 0 Unknown, 59 Unchecked, 0.4s Time] [2022-07-14 13:47:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-07-14 13:47:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 508. [2022-07-14 13:47:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 396 states have (on average 1.1464646464646464) internal successors, (454), 395 states have internal predecessors, (454), 66 states have call successors, (66), 34 states have call predecessors, (66), 39 states have return successors, (81), 78 states have call predecessors, (81), 66 states have call successors, (81) [2022-07-14 13:47:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 601 transitions. [2022-07-14 13:47:14,633 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 601 transitions. Word has length 114 [2022-07-14 13:47:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:14,634 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 601 transitions. [2022-07-14 13:47:14,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 601 transitions. [2022-07-14 13:47:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-14 13:47:14,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:14,635 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:14,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:14,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-14 13:47:14,851 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2022-07-14 13:47:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189053770] [2022-07-14 13:47:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:14,858 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381202712] [2022-07-14 13:47:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:14,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:14,861 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:14,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-14 13:47:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:14,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-14 13:47:14,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-14 13:47:15,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:15,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:15,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189053770] [2022-07-14 13:47:15,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381202712] [2022-07-14 13:47:15,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381202712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:15,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:15,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-14 13:47:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640690252] [2022-07-14 13:47:15,211 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:15,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 13:47:15,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 13:47:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-14 13:47:15,212 INFO L87 Difference]: Start difference. First operand 508 states and 601 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-14 13:47:17,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-14 13:47:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:17,812 INFO L93 Difference]: Finished difference Result 1053 states and 1314 transitions. [2022-07-14 13:47:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 13:47:17,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 119 [2022-07-14 13:47:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:17,816 INFO L225 Difference]: With dead ends: 1053 [2022-07-14 13:47:17,816 INFO L226 Difference]: Without dead ends: 715 [2022-07-14 13:47:17,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:47:17,817 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:17,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 819 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-14 13:47:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-14 13:47:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 612. [2022-07-14 13:47:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 476 states have (on average 1.1596638655462186) internal successors, (552), 477 states have internal predecessors, (552), 84 states have call successors, (84), 39 states have call predecessors, (84), 45 states have return successors, (108), 95 states have call predecessors, (108), 84 states have call successors, (108) [2022-07-14 13:47:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 744 transitions. [2022-07-14 13:47:17,842 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 744 transitions. Word has length 119 [2022-07-14 13:47:17,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:17,842 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 744 transitions. [2022-07-14 13:47:17,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-14 13:47:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 744 transitions. [2022-07-14 13:47:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-14 13:47:17,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:17,844 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:17,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:18,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:18,059 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1295624958, now seen corresponding path program 2 times [2022-07-14 13:47:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:18,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193022372] [2022-07-14 13:47:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:18,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:18,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864562916] [2022-07-14 13:47:18,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:18,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:18,069 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-14 13:47:18,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:18,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:18,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:47:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-14 13:47:18,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-14 13:47:18,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193022372] [2022-07-14 13:47:18,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864562916] [2022-07-14 13:47:18,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864562916] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:18,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:18,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-07-14 13:47:18,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846849599] [2022-07-14 13:47:18,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:18,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 13:47:18,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 13:47:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:18,335 INFO L87 Difference]: Start difference. First operand 612 states and 744 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-14 13:47:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:18,701 INFO L93 Difference]: Finished difference Result 1187 states and 1470 transitions. [2022-07-14 13:47:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 13:47:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 124 [2022-07-14 13:47:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:18,706 INFO L225 Difference]: With dead ends: 1187 [2022-07-14 13:47:18,706 INFO L226 Difference]: Without dead ends: 672 [2022-07-14 13:47:18,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-07-14 13:47:18,708 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:18,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 536 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:47:18,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-14 13:47:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 617. [2022-07-14 13:47:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1565762004175366) internal successors, (554), 482 states have internal predecessors, (554), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2022-07-14 13:47:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 743 transitions. [2022-07-14 13:47:18,730 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 743 transitions. Word has length 124 [2022-07-14 13:47:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:18,731 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 743 transitions. [2022-07-14 13:47:18,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-14 13:47:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 743 transitions. [2022-07-14 13:47:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-14 13:47:18,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:18,732 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:18,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-14 13:47:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-14 13:47:18,947 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2022-07-14 13:47:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:18,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556601352] [2022-07-14 13:47:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:18,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:18,954 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:18,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904124127] [2022-07-14 13:47:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:18,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:18,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:18,956 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:18,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-14 13:47:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:19,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:47:19,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-14 13:47:19,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-14 13:47:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556601352] [2022-07-14 13:47:19,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904124127] [2022-07-14 13:47:19,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904124127] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:19,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:19,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-14 13:47:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917127220] [2022-07-14 13:47:19,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:47:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:47:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:19,212 INFO L87 Difference]: Start difference. First operand 617 states and 743 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-14 13:47:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:19,402 INFO L93 Difference]: Finished difference Result 623 states and 744 transitions. [2022-07-14 13:47:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 13:47:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2022-07-14 13:47:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:19,404 INFO L225 Difference]: With dead ends: 623 [2022-07-14 13:47:19,404 INFO L226 Difference]: Without dead ends: 622 [2022-07-14 13:47:19,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-14 13:47:19,405 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:19,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 377 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-14 13:47:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 617. [2022-07-14 13:47:19,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1524008350730688) internal successors, (552), 482 states have internal predecessors, (552), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2022-07-14 13:47:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2022-07-14 13:47:19,435 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 125 [2022-07-14 13:47:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:19,436 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2022-07-14 13:47:19,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-14 13:47:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2022-07-14 13:47:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-14 13:47:19,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:19,438 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 7, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:19,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:19,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-14 13:47:19,647 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:19,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash -282687370, now seen corresponding path program 2 times [2022-07-14 13:47:19,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:19,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441694056] [2022-07-14 13:47:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:19,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:19,655 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:19,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312981575] [2022-07-14 13:47:19,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:19,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:19,656 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:19,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-14 13:47:19,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:19,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:19,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:47:19,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 173 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-14 13:47:19,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 88 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-14 13:47:19,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:19,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441694056] [2022-07-14 13:47:19,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:19,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312981575] [2022-07-14 13:47:19,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312981575] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:19,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:19,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-07-14 13:47:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920245273] [2022-07-14 13:47:19,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 13:47:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 13:47:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:47:19,863 INFO L87 Difference]: Start difference. First operand 617 states and 741 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:20,023 INFO L93 Difference]: Finished difference Result 1067 states and 1314 transitions. [2022-07-14 13:47:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 13:47:20,024 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 134 [2022-07-14 13:47:20,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:20,026 INFO L225 Difference]: With dead ends: 1067 [2022-07-14 13:47:20,026 INFO L226 Difference]: Without dead ends: 622 [2022-07-14 13:47:20,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:20,028 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 67 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:20,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 374 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-14 13:47:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2022-07-14 13:47:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 471 states have (on average 1.1507430997876857) internal successors, (542), 474 states have internal predecessors, (542), 84 states have call successors, (84), 40 states have call predecessors, (84), 45 states have return successors, (101), 92 states have call predecessors, (101), 84 states have call successors, (101) [2022-07-14 13:47:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 727 transitions. [2022-07-14 13:47:20,055 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 727 transitions. Word has length 134 [2022-07-14 13:47:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 727 transitions. [2022-07-14 13:47:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:47:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 727 transitions. [2022-07-14 13:47:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-14 13:47:20,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:20,057 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 9, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:20,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-07-14 13:47:20,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-14 13:47:20,271 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 3 times [2022-07-14 13:47:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218021325] [2022-07-14 13:47:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:20,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917292039] [2022-07-14 13:47:20,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:47:20,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:20,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:20,287 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-14 13:47:20,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-14 13:47:20,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:20,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 13:47:20,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-14 13:47:20,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218021325] [2022-07-14 13:47:20,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917292039] [2022-07-14 13:47:20,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917292039] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:20,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:20,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-14 13:47:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814899550] [2022-07-14 13:47:20,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 13:47:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 13:47:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-14 13:47:20,742 INFO L87 Difference]: Start difference. First operand 607 states and 727 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 13:47:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:20,914 INFO L93 Difference]: Finished difference Result 692 states and 865 transitions. [2022-07-14 13:47:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 13:47:20,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 143 [2022-07-14 13:47:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:20,917 INFO L225 Difference]: With dead ends: 692 [2022-07-14 13:47:20,917 INFO L226 Difference]: Without dead ends: 691 [2022-07-14 13:47:20,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:47:20,918 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 29 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:20,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 200 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-14 13:47:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 633. [2022-07-14 13:47:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 492 states have (on average 1.1443089430894309) internal successors, (563), 494 states have internal predecessors, (563), 84 states have call successors, (84), 40 states have call predecessors, (84), 50 states have return successors, (113), 98 states have call predecessors, (113), 84 states have call successors, (113) [2022-07-14 13:47:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 760 transitions. [2022-07-14 13:47:20,943 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 760 transitions. Word has length 143 [2022-07-14 13:47:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:20,943 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 760 transitions. [2022-07-14 13:47:20,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 13:47:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 760 transitions. [2022-07-14 13:47:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-14 13:47:20,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:20,945 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:20,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:21,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-14 13:47:21,159 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:21,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2022-07-14 13:47:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:21,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139086478] [2022-07-14 13:47:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:21,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344260697] [2022-07-14 13:47:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:21,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:21,169 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:21,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-14 13:47:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:21,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:47:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-14 13:47:21,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-14 13:47:21,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139086478] [2022-07-14 13:47:21,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344260697] [2022-07-14 13:47:21,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344260697] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:21,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:21,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-07-14 13:47:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272611091] [2022-07-14 13:47:21,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:21,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 13:47:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 13:47:21,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:47:21,647 INFO L87 Difference]: Start difference. First operand 633 states and 760 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2022-07-14 13:47:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:21,914 INFO L93 Difference]: Finished difference Result 1341 states and 1694 transitions. [2022-07-14 13:47:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 13:47:21,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) Word has length 146 [2022-07-14 13:47:21,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:21,918 INFO L225 Difference]: With dead ends: 1341 [2022-07-14 13:47:21,918 INFO L226 Difference]: Without dead ends: 777 [2022-07-14 13:47:21,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-14 13:47:21,920 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 79 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:21,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 270 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-14 13:47:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 680. [2022-07-14 13:47:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 528 states have (on average 1.143939393939394) internal successors, (604), 528 states have internal predecessors, (604), 91 states have call successors, (91), 40 states have call predecessors, (91), 54 states have return successors, (126), 111 states have call predecessors, (126), 89 states have call successors, (126) [2022-07-14 13:47:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 821 transitions. [2022-07-14 13:47:21,957 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 821 transitions. Word has length 146 [2022-07-14 13:47:21,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:21,958 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 821 transitions. [2022-07-14 13:47:21,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2022-07-14 13:47:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 821 transitions. [2022-07-14 13:47:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-14 13:47:21,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:21,961 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 9, 7, 7, 7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:21,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-07-14 13:47:22,183 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash -775399783, now seen corresponding path program 4 times [2022-07-14 13:47:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:22,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845578599] [2022-07-14 13:47:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:22,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:22,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643136007] [2022-07-14 13:47:22,191 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:47:22,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:22,193 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:22,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-14 13:47:22,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:47:22,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:22,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:47:22,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 99 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-14 13:47:22,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 106 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-14 13:47:22,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:22,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845578599] [2022-07-14 13:47:22,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:22,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643136007] [2022-07-14 13:47:22,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643136007] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:22,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:22,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 21 [2022-07-14 13:47:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708845006] [2022-07-14 13:47:22,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:22,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 13:47:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 13:47:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-07-14 13:47:22,782 INFO L87 Difference]: Start difference. First operand 680 states and 821 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2022-07-14 13:47:23,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:23,433 INFO L93 Difference]: Finished difference Result 1464 states and 1866 transitions. [2022-07-14 13:47:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-14 13:47:23,433 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) Word has length 163 [2022-07-14 13:47:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:23,437 INFO L225 Difference]: With dead ends: 1464 [2022-07-14 13:47:23,437 INFO L226 Difference]: Without dead ends: 878 [2022-07-14 13:47:23,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 13:47:23,440 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:23,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 367 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:47:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-07-14 13:47:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 714. [2022-07-14 13:47:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 552 states have (on average 1.1358695652173914) internal successors, (627), 556 states have internal predecessors, (627), 98 states have call successors, (98), 44 states have call predecessors, (98), 57 states have return successors, (147), 113 states have call predecessors, (147), 98 states have call successors, (147) [2022-07-14 13:47:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 872 transitions. [2022-07-14 13:47:23,471 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 872 transitions. Word has length 163 [2022-07-14 13:47:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:23,472 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 872 transitions. [2022-07-14 13:47:23,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2022-07-14 13:47:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 872 transitions. [2022-07-14 13:47:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-14 13:47:23,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:23,474 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:23,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:23,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:23,695 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:23,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:23,696 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2022-07-14 13:47:23,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:23,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4621729] [2022-07-14 13:47:23,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:23,705 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:23,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1149718380] [2022-07-14 13:47:23,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:23,707 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:23,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-14 13:47:23,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:23,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:23,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 13:47:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-07-14 13:47:23,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-07-14 13:47:23,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:23,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4621729] [2022-07-14 13:47:23,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:23,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149718380] [2022-07-14 13:47:23,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149718380] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:23,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:23,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-14 13:47:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85423914] [2022-07-14 13:47:23,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:47:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:47:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:23,955 INFO L87 Difference]: Start difference. First operand 714 states and 872 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-14 13:47:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:24,094 INFO L93 Difference]: Finished difference Result 903 states and 1126 transitions. [2022-07-14 13:47:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 13:47:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 156 [2022-07-14 13:47:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:24,098 INFO L225 Difference]: With dead ends: 903 [2022-07-14 13:47:24,098 INFO L226 Difference]: Without dead ends: 902 [2022-07-14 13:47:24,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:47:24,098 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 76 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:24,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 275 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-14 13:47:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 842. [2022-07-14 13:47:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 657 states have (on average 1.1506849315068493) internal successors, (756), 664 states have internal predecessors, (756), 121 states have call successors, (121), 44 states have call predecessors, (121), 57 states have return successors, (170), 133 states have call predecessors, (170), 121 states have call successors, (170) [2022-07-14 13:47:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1047 transitions. [2022-07-14 13:47:24,134 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1047 transitions. Word has length 156 [2022-07-14 13:47:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1047 transitions. [2022-07-14 13:47:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-07-14 13:47:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1047 transitions. [2022-07-14 13:47:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-14 13:47:24,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:24,137 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:24,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-07-14 13:47:24,355 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2022-07-14 13:47:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:24,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312500959] [2022-07-14 13:47:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:24,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113951947] [2022-07-14 13:47:24,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:47:24,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:24,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:24,365 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:24,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-14 13:47:24,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 13:47:24,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:24,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:47:24,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-14 13:47:24,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-14 13:47:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:24,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312500959] [2022-07-14 13:47:24,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:24,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113951947] [2022-07-14 13:47:24,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113951947] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:24,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:24,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-14 13:47:24,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543137832] [2022-07-14 13:47:24,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:24,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-14 13:47:24,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:24,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-14 13:47:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:24,587 INFO L87 Difference]: Start difference. First operand 842 states and 1047 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:24,879 INFO L93 Difference]: Finished difference Result 949 states and 1201 transitions. [2022-07-14 13:47:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:47:24,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 166 [2022-07-14 13:47:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:24,884 INFO L225 Difference]: With dead ends: 949 [2022-07-14 13:47:24,884 INFO L226 Difference]: Without dead ends: 948 [2022-07-14 13:47:24,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:47:24,885 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 137 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:24,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 501 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:24,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-07-14 13:47:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 931. [2022-07-14 13:47:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 726 states have (on average 1.1528925619834711) internal successors, (837), 731 states have internal predecessors, (837), 132 states have call successors, (132), 49 states have call predecessors, (132), 66 states have return successors, (194), 150 states have call predecessors, (194), 132 states have call successors, (194) [2022-07-14 13:47:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1163 transitions. [2022-07-14 13:47:24,923 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1163 transitions. Word has length 166 [2022-07-14 13:47:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:24,923 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1163 transitions. [2022-07-14 13:47:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-14 13:47:24,924 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1163 transitions. [2022-07-14 13:47:24,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-14 13:47:24,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:24,925 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:24,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:25,139 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2022-07-14 13:47:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:25,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460856864] [2022-07-14 13:47:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:25,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:25,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997693515] [2022-07-14 13:47:25,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:25,160 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:25,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-07-14 13:47:25,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:25,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:25,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 13:47:25,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-07-14 13:47:25,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460856864] [2022-07-14 13:47:25,345 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997693515] [2022-07-14 13:47:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997693515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:25,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:25,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 13:47:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081866212] [2022-07-14 13:47:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:25,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 13:47:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 13:47:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-14 13:47:25,347 INFO L87 Difference]: Start difference. First operand 931 states and 1163 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-14 13:47:25,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:25,575 INFO L93 Difference]: Finished difference Result 1743 states and 2237 transitions. [2022-07-14 13:47:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:47:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 169 [2022-07-14 13:47:25,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:25,580 INFO L225 Difference]: With dead ends: 1743 [2022-07-14 13:47:25,580 INFO L226 Difference]: Without dead ends: 1024 [2022-07-14 13:47:25,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:25,585 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:25,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 217 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 13:47:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-07-14 13:47:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 933. [2022-07-14 13:47:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 727 states have (on average 1.1526822558459422) internal successors, (838), 733 states have internal predecessors, (838), 132 states have call successors, (132), 49 states have call predecessors, (132), 67 states have return successors, (209), 150 states have call predecessors, (209), 132 states have call successors, (209) [2022-07-14 13:47:25,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1179 transitions. [2022-07-14 13:47:25,633 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1179 transitions. Word has length 169 [2022-07-14 13:47:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:25,633 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1179 transitions. [2022-07-14 13:47:25,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-14 13:47:25,633 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1179 transitions. [2022-07-14 13:47:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-14 13:47:25,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:25,635 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:25,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-14 13:47:25,851 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2022-07-14 13:47:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521547719] [2022-07-14 13:47:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:25,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38091192] [2022-07-14 13:47:25,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:47:25,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:25,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:25,861 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:25,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-07-14 13:47:25,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-14 13:47:25,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:25,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:47:25,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-14 13:47:26,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-14 13:47:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:26,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521547719] [2022-07-14 13:47:26,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:26,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38091192] [2022-07-14 13:47:26,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38091192] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:26,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:26,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-14 13:47:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513315739] [2022-07-14 13:47:26,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:47:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:47:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-14 13:47:26,200 INFO L87 Difference]: Start difference. First operand 933 states and 1179 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-14 13:47:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:26,392 INFO L93 Difference]: Finished difference Result 935 states and 1179 transitions. [2022-07-14 13:47:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:47:26,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 179 [2022-07-14 13:47:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:26,396 INFO L225 Difference]: With dead ends: 935 [2022-07-14 13:47:26,396 INFO L226 Difference]: Without dead ends: 934 [2022-07-14 13:47:26,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:47:26,397 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 81 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 432 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-07-14 13:47:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 933. [2022-07-14 13:47:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 727 states have (on average 1.141678129298487) internal successors, (830), 733 states have internal predecessors, (830), 132 states have call successors, (132), 49 states have call predecessors, (132), 67 states have return successors, (209), 150 states have call predecessors, (209), 132 states have call successors, (209) [2022-07-14 13:47:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1171 transitions. [2022-07-14 13:47:26,435 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1171 transitions. Word has length 179 [2022-07-14 13:47:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:26,435 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1171 transitions. [2022-07-14 13:47:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-14 13:47:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1171 transitions. [2022-07-14 13:47:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-14 13:47:26,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:26,437 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:26,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-07-14 13:47:26,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-07-14 13:47:26,643 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2022-07-14 13:47:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542970099] [2022-07-14 13:47:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:26,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:26,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:26,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30357403] [2022-07-14 13:47:26,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:47:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:26,651 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-07-14 13:47:26,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:47:26,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:47:26,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-14 13:47:26,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-07-14 13:47:27,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542970099] [2022-07-14 13:47:27,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30357403] [2022-07-14 13:47:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30357403] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:27,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:27,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-07-14 13:47:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084178811] [2022-07-14 13:47:27,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:27,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 13:47:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 13:47:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:47:27,117 INFO L87 Difference]: Start difference. First operand 933 states and 1171 transitions. Second operand has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-14 13:47:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:27,494 INFO L93 Difference]: Finished difference Result 1881 states and 2490 transitions. [2022-07-14 13:47:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 13:47:27,495 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 176 [2022-07-14 13:47:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:27,500 INFO L225 Difference]: With dead ends: 1881 [2022-07-14 13:47:27,500 INFO L226 Difference]: Without dead ends: 1204 [2022-07-14 13:47:27,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:47:27,503 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 144 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:27,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 647 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:47:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-07-14 13:47:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1138. [2022-07-14 13:47:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 887 states have (on average 1.153325817361894) internal successors, (1023), 890 states have internal predecessors, (1023), 170 states have call successors, (170), 55 states have call predecessors, (170), 74 states have return successors, (283), 192 states have call predecessors, (283), 170 states have call successors, (283) [2022-07-14 13:47:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1476 transitions. [2022-07-14 13:47:27,563 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1476 transitions. Word has length 176 [2022-07-14 13:47:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:27,563 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1476 transitions. [2022-07-14 13:47:27,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-14 13:47:27,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1476 transitions. [2022-07-14 13:47:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-14 13:47:27,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:27,565 INFO L195 NwaCegarLoop]: trace histogram [20, 17, 10, 10, 10, 10, 10, 8, 8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:27,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-07-14 13:47:27,787 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 220180665, now seen corresponding path program 5 times [2022-07-14 13:47:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:27,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814488377] [2022-07-14 13:47:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:27,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:27,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333878944] [2022-07-14 13:47:27,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:47:27,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:27,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:27,796 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:27,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-07-14 13:47:27,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-14 13:47:27,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:27,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 13:47:27,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 552 proven. 105 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-14 13:47:28,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 329 proven. 236 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-07-14 13:47:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814488377] [2022-07-14 13:47:28,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333878944] [2022-07-14 13:47:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333878944] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:28,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:28,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 25 [2022-07-14 13:47:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851242498] [2022-07-14 13:47:28,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-14 13:47:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-14 13:47:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-14 13:47:28,848 INFO L87 Difference]: Start difference. First operand 1138 states and 1476 transitions. Second operand has 25 states, 21 states have (on average 5.428571428571429) internal successors, (114), 25 states have internal predecessors, (114), 16 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) [2022-07-14 13:47:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:29,949 INFO L93 Difference]: Finished difference Result 2712 states and 3813 transitions. [2022-07-14 13:47:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-14 13:47:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 5.428571428571429) internal successors, (114), 25 states have internal predecessors, (114), 16 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) Word has length 203 [2022-07-14 13:47:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:29,956 INFO L225 Difference]: With dead ends: 2712 [2022-07-14 13:47:29,956 INFO L226 Difference]: Without dead ends: 1644 [2022-07-14 13:47:29,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2022-07-14 13:47:29,961 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 338 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:29,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 663 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:47:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-07-14 13:47:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1390. [2022-07-14 13:47:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1079 states have (on average 1.1390176088971269) internal successors, (1229), 1093 states have internal predecessors, (1229), 215 states have call successors, (215), 61 states have call predecessors, (215), 89 states have return successors, (459), 235 states have call predecessors, (459), 215 states have call successors, (459) [2022-07-14 13:47:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1903 transitions. [2022-07-14 13:47:30,059 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1903 transitions. Word has length 203 [2022-07-14 13:47:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:30,060 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1903 transitions. [2022-07-14 13:47:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 5.428571428571429) internal successors, (114), 25 states have internal predecessors, (114), 16 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) [2022-07-14 13:47:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1903 transitions. [2022-07-14 13:47:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-14 13:47:30,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:30,062 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:30,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-07-14 13:47:30,284 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2022-07-14 13:47:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:30,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106350833] [2022-07-14 13:47:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:30,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003143225] [2022-07-14 13:47:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:30,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:30,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:30,293 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:30,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-07-14 13:47:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:30,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:47:30,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-07-14 13:47:30,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106350833] [2022-07-14 13:47:30,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003143225] [2022-07-14 13:47:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003143225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:47:30,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709727579] [2022-07-14 13:47:30,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:47:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:47:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:47:30,391 INFO L87 Difference]: Start difference. First operand 1390 states and 1903 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 13:47:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:30,449 INFO L93 Difference]: Finished difference Result 1497 states and 2025 transitions. [2022-07-14 13:47:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:47:30,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 197 [2022-07-14 13:47:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:30,454 INFO L225 Difference]: With dead ends: 1497 [2022-07-14 13:47:30,454 INFO L226 Difference]: Without dead ends: 1494 [2022-07-14 13:47:30,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:47:30,455 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:30,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 183 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:47:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-07-14 13:47:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1398. [2022-07-14 13:47:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1087 states have (on average 1.137994480220791) internal successors, (1237), 1097 states have internal predecessors, (1237), 215 states have call successors, (215), 61 states have call predecessors, (215), 89 states have return successors, (457), 239 states have call predecessors, (457), 215 states have call successors, (457) [2022-07-14 13:47:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1909 transitions. [2022-07-14 13:47:30,534 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1909 transitions. Word has length 197 [2022-07-14 13:47:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:30,534 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1909 transitions. [2022-07-14 13:47:30,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 13:47:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1909 transitions. [2022-07-14 13:47:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-14 13:47:30,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:30,536 INFO L195 NwaCegarLoop]: trace histogram [21, 18, 11, 11, 11, 11, 10, 9, 9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:30,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:30,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-14 13:47:30,758 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:30,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2037013593, now seen corresponding path program 6 times [2022-07-14 13:47:30,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:30,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946155861] [2022-07-14 13:47:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:30,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:30,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:30,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289744479] [2022-07-14 13:47:30,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:47:30,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:30,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:30,776 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:30,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-07-14 13:47:30,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-07-14 13:47:30,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:30,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 13:47:30,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 246 proven. 18 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-07-14 13:47:31,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946155861] [2022-07-14 13:47:31,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289744479] [2022-07-14 13:47:31,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289744479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:31,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:31,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-14 13:47:31,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487038798] [2022-07-14 13:47:31,647 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 13:47:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:31,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 13:47:31,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-14 13:47:31,648 INFO L87 Difference]: Start difference. First operand 1398 states and 1909 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 13:47:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:31,962 INFO L93 Difference]: Finished difference Result 1464 states and 2043 transitions. [2022-07-14 13:47:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:47:31,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 213 [2022-07-14 13:47:31,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:31,973 INFO L225 Difference]: With dead ends: 1464 [2022-07-14 13:47:31,973 INFO L226 Difference]: Without dead ends: 1463 [2022-07-14 13:47:31,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-07-14 13:47:31,974 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:31,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 248 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 51 Unchecked, 0.1s Time] [2022-07-14 13:47:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-14 13:47:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1433. [2022-07-14 13:47:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1117 states have (on average 1.134288272157565) internal successors, (1267), 1122 states have internal predecessors, (1267), 215 states have call successors, (215), 61 states have call predecessors, (215), 94 states have return successors, (470), 249 states have call predecessors, (470), 215 states have call successors, (470) [2022-07-14 13:47:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1952 transitions. [2022-07-14 13:47:32,067 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1952 transitions. Word has length 213 [2022-07-14 13:47:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:32,068 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1952 transitions. [2022-07-14 13:47:32,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 3 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 13:47:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1952 transitions. [2022-07-14 13:47:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-14 13:47:32,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:32,070 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:32,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:32,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-07-14 13:47:32,292 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:32,293 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2022-07-14 13:47:32,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:32,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926278451] [2022-07-14 13:47:32,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:32,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:32,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:32,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666967954] [2022-07-14 13:47:32,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:32,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:32,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:32,303 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:32,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-07-14 13:47:32,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:32,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:32,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:47:32,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-14 13:47:32,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-14 13:47:32,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926278451] [2022-07-14 13:47:32,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666967954] [2022-07-14 13:47:32,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666967954] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:32,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:32,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-07-14 13:47:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360088913] [2022-07-14 13:47:32,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:32,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 13:47:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 13:47:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:47:32,776 INFO L87 Difference]: Start difference. First operand 1433 states and 1952 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-14 13:47:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:33,286 INFO L93 Difference]: Finished difference Result 2647 states and 3687 transitions. [2022-07-14 13:47:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 13:47:33,287 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 207 [2022-07-14 13:47:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:33,293 INFO L225 Difference]: With dead ends: 2647 [2022-07-14 13:47:33,293 INFO L226 Difference]: Without dead ends: 1463 [2022-07-14 13:47:33,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-07-14 13:47:33,299 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 121 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:33,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 465 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:47:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-14 13:47:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1386. [2022-07-14 13:47:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1079 states have (on average 1.1390176088971269) internal successors, (1229), 1086 states have internal predecessors, (1229), 209 states have call successors, (209), 62 states have call predecessors, (209), 91 states have return successors, (389), 237 states have call predecessors, (389), 208 states have call successors, (389) [2022-07-14 13:47:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1827 transitions. [2022-07-14 13:47:33,362 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1827 transitions. Word has length 207 [2022-07-14 13:47:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:33,363 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1827 transitions. [2022-07-14 13:47:33,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-14 13:47:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1827 transitions. [2022-07-14 13:47:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-14 13:47:33,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:33,365 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 10, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:33,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-07-14 13:47:33,579 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash 502851865, now seen corresponding path program 7 times [2022-07-14 13:47:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052364496] [2022-07-14 13:47:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:33,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:33,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885144105] [2022-07-14 13:47:33,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:47:33,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:33,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:33,591 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:33,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-07-14 13:47:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:47:33,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 336 proven. 51 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-14 13:47:33,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 336 proven. 57 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2022-07-14 13:47:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:34,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052364496] [2022-07-14 13:47:34,236 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:34,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885144105] [2022-07-14 13:47:34,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885144105] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:34,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:34,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 20 [2022-07-14 13:47:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558956963] [2022-07-14 13:47:34,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 13:47:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:34,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 13:47:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:47:34,237 INFO L87 Difference]: Start difference. First operand 1386 states and 1827 transitions. Second operand has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 11 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2022-07-14 13:47:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:34,842 INFO L93 Difference]: Finished difference Result 2938 states and 3976 transitions. [2022-07-14 13:47:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 13:47:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 11 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) Word has length 213 [2022-07-14 13:47:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:34,849 INFO L225 Difference]: With dead ends: 2938 [2022-07-14 13:47:34,849 INFO L226 Difference]: Without dead ends: 1667 [2022-07-14 13:47:34,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:47:34,853 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 101 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:34,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 724 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:47:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2022-07-14 13:47:34,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1581. [2022-07-14 13:47:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1228 states have (on average 1.1351791530944626) internal successors, (1394), 1232 states have internal predecessors, (1394), 239 states have call successors, (239), 71 states have call predecessors, (239), 107 states have return successors, (453), 277 states have call predecessors, (453), 238 states have call successors, (453) [2022-07-14 13:47:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2086 transitions. [2022-07-14 13:47:34,919 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2086 transitions. Word has length 213 [2022-07-14 13:47:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:34,919 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2086 transitions. [2022-07-14 13:47:34,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 11 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2022-07-14 13:47:34,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2086 transitions. [2022-07-14 13:47:34,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-14 13:47:34,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:34,921 INFO L195 NwaCegarLoop]: trace histogram [22, 19, 11, 11, 11, 11, 11, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:34,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:35,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:35,135 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1483060659, now seen corresponding path program 3 times [2022-07-14 13:47:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:35,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047387134] [2022-07-14 13:47:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:35,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:35,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498893967] [2022-07-14 13:47:35,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:47:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:35,146 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:35,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-07-14 13:47:35,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-14 13:47:35,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:35,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-14 13:47:35,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:35,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 319 proven. 40 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2022-07-14 13:47:35,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:36,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047387134] [2022-07-14 13:47:36,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498893967] [2022-07-14 13:47:36,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498893967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:36,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:36,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-07-14 13:47:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833010781] [2022-07-14 13:47:36,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:36,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 13:47:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 13:47:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:47:36,864 INFO L87 Difference]: Start difference. First operand 1581 states and 2086 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-14 13:47:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:37,978 INFO L93 Difference]: Finished difference Result 1695 states and 2340 transitions. [2022-07-14 13:47:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:47:37,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 224 [2022-07-14 13:47:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:37,991 INFO L225 Difference]: With dead ends: 1695 [2022-07-14 13:47:37,991 INFO L226 Difference]: Without dead ends: 1694 [2022-07-14 13:47:37,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-07-14 13:47:37,993 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:37,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 362 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:47:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-07-14 13:47:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1606. [2022-07-14 13:47:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1248 states have (on average 1.1330128205128205) internal successors, (1414), 1252 states have internal predecessors, (1414), 239 states have call successors, (239), 71 states have call predecessors, (239), 112 states have return successors, (466), 282 states have call predecessors, (466), 238 states have call successors, (466) [2022-07-14 13:47:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2119 transitions. [2022-07-14 13:47:38,086 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2119 transitions. Word has length 224 [2022-07-14 13:47:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:38,087 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2119 transitions. [2022-07-14 13:47:38,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 14 states have internal predecessors, (64), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-14 13:47:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2119 transitions. [2022-07-14 13:47:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-14 13:47:38,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:38,089 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 10, 10, 10, 10, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:38,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:38,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-07-14 13:47:38,304 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -639257203, now seen corresponding path program 4 times [2022-07-14 13:47:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:38,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707264952] [2022-07-14 13:47:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:38,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:38,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522238864] [2022-07-14 13:47:38,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:47:38,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:38,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:38,315 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:38,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-07-14 13:47:38,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:47:38,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:38,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 13:47:38,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 141 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-07-14 13:47:38,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 142 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-07-14 13:47:38,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707264952] [2022-07-14 13:47:38,929 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522238864] [2022-07-14 13:47:38,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522238864] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:38,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:38,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2022-07-14 13:47:38,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997769324] [2022-07-14 13:47:38,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:38,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 13:47:38,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 13:47:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:47:38,930 INFO L87 Difference]: Start difference. First operand 1606 states and 2119 transitions. Second operand has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-14 13:47:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:39,562 INFO L93 Difference]: Finished difference Result 3807 states and 5288 transitions. [2022-07-14 13:47:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 13:47:39,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) Word has length 224 [2022-07-14 13:47:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:39,569 INFO L225 Difference]: With dead ends: 3807 [2022-07-14 13:47:39,569 INFO L226 Difference]: Without dead ends: 2482 [2022-07-14 13:47:39,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-07-14 13:47:39,574 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 274 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:39,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 354 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:47:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-07-14 13:47:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2029. [2022-07-14 13:47:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1575 states have (on average 1.1377777777777778) internal successors, (1792), 1574 states have internal predecessors, (1792), 318 states have call successors, (318), 84 states have call predecessors, (318), 129 states have return successors, (659), 370 states have call predecessors, (659), 317 states have call successors, (659) [2022-07-14 13:47:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2769 transitions. [2022-07-14 13:47:39,696 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2769 transitions. Word has length 224 [2022-07-14 13:47:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:39,697 INFO L495 AbstractCegarLoop]: Abstraction has 2029 states and 2769 transitions. [2022-07-14 13:47:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-14 13:47:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2769 transitions. [2022-07-14 13:47:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-14 13:47:39,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:39,699 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:39,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:39,919 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash 473879306, now seen corresponding path program 5 times [2022-07-14 13:47:39,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756490327] [2022-07-14 13:47:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:39,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:39,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078082377] [2022-07-14 13:47:39,926 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:47:39,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:39,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:39,927 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:39,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-07-14 13:47:40,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-07-14 13:47:40,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:40,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 13:47:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 534 proven. 72 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2022-07-14 13:47:40,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 534 proven. 90 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-14 13:47:40,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756490327] [2022-07-14 13:47:40,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078082377] [2022-07-14 13:47:40,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078082377] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:40,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:40,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 27 [2022-07-14 13:47:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760651474] [2022-07-14 13:47:40,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:40,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 13:47:40,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:40,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 13:47:40,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:47:40,897 INFO L87 Difference]: Start difference. First operand 2029 states and 2769 transitions. Second operand has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 23 states have internal predecessors, (122), 16 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2022-07-14 13:47:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:42,002 INFO L93 Difference]: Finished difference Result 4560 states and 6562 transitions. [2022-07-14 13:47:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-14 13:47:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 23 states have internal predecessors, (122), 16 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) Word has length 242 [2022-07-14 13:47:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:42,011 INFO L225 Difference]: With dead ends: 4560 [2022-07-14 13:47:42,011 INFO L226 Difference]: Without dead ends: 2955 [2022-07-14 13:47:42,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=1694, Unknown=0, NotChecked=0, Total=1980 [2022-07-14 13:47:42,016 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 172 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:42,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 890 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:47:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-07-14 13:47:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2776. [2022-07-14 13:47:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2155 states have (on average 1.148491879350348) internal successors, (2475), 2167 states have internal predecessors, (2475), 460 states have call successors, (460), 97 states have call predecessors, (460), 154 states have return successors, (954), 511 states have call predecessors, (954), 459 states have call successors, (954) [2022-07-14 13:47:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 3889 transitions. [2022-07-14 13:47:42,206 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 3889 transitions. Word has length 242 [2022-07-14 13:47:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:42,206 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 3889 transitions. [2022-07-14 13:47:42,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.518518518518518) internal successors, (122), 23 states have internal predecessors, (122), 16 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2022-07-14 13:47:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 3889 transitions. [2022-07-14 13:47:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-14 13:47:42,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:42,208 INFO L195 NwaCegarLoop]: trace histogram [24, 21, 12, 12, 12, 12, 12, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:42,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-07-14 13:47:42,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:42,431 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1875748746, now seen corresponding path program 6 times [2022-07-14 13:47:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:42,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559796826] [2022-07-14 13:47:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:42,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:42,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708066949] [2022-07-14 13:47:42,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:47:42,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:42,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:42,443 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:42,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-07-14 13:47:42,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-14 13:47:42,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:42,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:47:42,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 682 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-14 13:47:42,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:47:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559796826] [2022-07-14 13:47:42,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:42,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708066949] [2022-07-14 13:47:42,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708066949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:47:42,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:47:42,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 13:47:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976479061] [2022-07-14 13:47:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:47:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:47:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:47:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-14 13:47:42,574 INFO L87 Difference]: Start difference. First operand 2776 states and 3889 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-14 13:47:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:42,857 INFO L93 Difference]: Finished difference Result 4867 states and 6937 transitions. [2022-07-14 13:47:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:47:42,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 242 [2022-07-14 13:47:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:42,864 INFO L225 Difference]: With dead ends: 4867 [2022-07-14 13:47:42,864 INFO L226 Difference]: Without dead ends: 2657 [2022-07-14 13:47:42,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:47:42,873 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 55 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:42,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 271 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-07-14 13:47:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2640. [2022-07-14 13:47:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2057 states have (on average 1.1526494895478854) internal successors, (2371), 2067 states have internal predecessors, (2371), 426 states have call successors, (426), 95 states have call predecessors, (426), 150 states have return successors, (817), 477 states have call predecessors, (817), 426 states have call successors, (817) [2022-07-14 13:47:43,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3614 transitions. [2022-07-14 13:47:43,001 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3614 transitions. Word has length 242 [2022-07-14 13:47:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:43,001 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 3614 transitions. [2022-07-14 13:47:43,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-14 13:47:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3614 transitions. [2022-07-14 13:47:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-14 13:47:43,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:43,004 INFO L195 NwaCegarLoop]: trace histogram [28, 25, 16, 16, 16, 16, 14, 14, 13, 13, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:43,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:43,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-07-14 13:47:43,210 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1319612851, now seen corresponding path program 8 times [2022-07-14 13:47:43,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:43,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016340201] [2022-07-14 13:47:43,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:43,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:43,228 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576273507] [2022-07-14 13:47:43,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:47:43,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:43,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:43,230 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:43,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-07-14 13:47:43,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:47:43,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:43,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 13:47:43,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 397 proven. 104 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2022-07-14 13:47:43,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 397 proven. 104 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked. [2022-07-14 13:47:43,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016340201] [2022-07-14 13:47:43,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576273507] [2022-07-14 13:47:43,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576273507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:43,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:43,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2022-07-14 13:47:43,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759862759] [2022-07-14 13:47:43,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:43,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-14 13:47:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-14 13:47:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2022-07-14 13:47:43,953 INFO L87 Difference]: Start difference. First operand 2640 states and 3614 transitions. Second operand has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-14 13:47:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:44,933 INFO L93 Difference]: Finished difference Result 5777 states and 7993 transitions. [2022-07-14 13:47:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-14 13:47:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 277 [2022-07-14 13:47:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:44,942 INFO L225 Difference]: With dead ends: 5777 [2022-07-14 13:47:44,942 INFO L226 Difference]: Without dead ends: 3274 [2022-07-14 13:47:44,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=2213, Unknown=0, NotChecked=0, Total=2550 [2022-07-14 13:47:44,947 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 232 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:44,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 605 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:47:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2022-07-14 13:47:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3184. [2022-07-14 13:47:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2508 states have (on average 1.1658692185007975) internal successors, (2924), 2502 states have internal predecessors, (2924), 499 states have call successors, (499), 112 states have call predecessors, (499), 170 states have return successors, (929), 569 states have call predecessors, (929), 499 states have call successors, (929) [2022-07-14 13:47:45,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4352 transitions. [2022-07-14 13:47:45,156 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4352 transitions. Word has length 277 [2022-07-14 13:47:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:45,156 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 4352 transitions. [2022-07-14 13:47:45,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-14 13:47:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4352 transitions. [2022-07-14 13:47:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-14 13:47:45,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:45,159 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 14, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:45,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-07-14 13:47:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-07-14 13:47:45,361 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:45,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1219632254, now seen corresponding path program 1 times [2022-07-14 13:47:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:45,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653586759] [2022-07-14 13:47:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:45,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:45,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301874422] [2022-07-14 13:47:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:45,370 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:45,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-07-14 13:47:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:47:45,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:47:45,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 511 proven. 36 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2022-07-14 13:47:45,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2022-07-14 13:47:45,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653586759] [2022-07-14 13:47:45,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301874422] [2022-07-14 13:47:45,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301874422] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:47:45,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:47:45,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-14 13:47:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92880629] [2022-07-14 13:47:45,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:45,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-14 13:47:45,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:45,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-14 13:47:45,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:47:45,808 INFO L87 Difference]: Start difference. First operand 3184 states and 4352 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-14 13:47:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:47:46,203 INFO L93 Difference]: Finished difference Result 6098 states and 8412 transitions. [2022-07-14 13:47:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 13:47:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 254 [2022-07-14 13:47:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:47:46,212 INFO L225 Difference]: With dead ends: 6098 [2022-07-14 13:47:46,212 INFO L226 Difference]: Without dead ends: 3249 [2022-07-14 13:47:46,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-07-14 13:47:46,220 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 108 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:47:46,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 397 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:47:46,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-07-14 13:47:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3223. [2022-07-14 13:47:46,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2542 states have (on average 1.1652242328874902) internal successors, (2962), 2536 states have internal predecessors, (2962), 504 states have call successors, (504), 112 states have call predecessors, (504), 170 states have return successors, (939), 574 states have call predecessors, (939), 504 states have call successors, (939) [2022-07-14 13:47:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4405 transitions. [2022-07-14 13:47:46,422 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4405 transitions. Word has length 254 [2022-07-14 13:47:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:47:46,422 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4405 transitions. [2022-07-14 13:47:46,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-14 13:47:46,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4405 transitions. [2022-07-14 13:47:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-14 13:47:46,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:47:46,425 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 15, 15, 15, 15, 15, 15, 14, 14, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:47:46,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-07-14 13:47:46,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-07-14 13:47:46,639 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:47:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:47:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 918771219, now seen corresponding path program 9 times [2022-07-14 13:47:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:47:46,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593639180] [2022-07-14 13:47:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:47:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:47:46,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:47:46,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480257364] [2022-07-14 13:47:46,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:47:46,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:47:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:47:46,649 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:47:46,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-07-14 13:47:46,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-14 13:47:46,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:47:46,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-14 13:47:46,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:47:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 633 proven. 125 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2022-07-14 13:47:56,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:47:58,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:47:58,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593639180] [2022-07-14 13:47:58,183 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:47:58,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480257364] [2022-07-14 13:47:58,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480257364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:47:58,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:47:58,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-14 13:47:58,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145439348] [2022-07-14 13:47:58,183 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:47:58,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-14 13:47:58,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:47:58,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-14 13:47:58,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=856, Unknown=6, NotChecked=0, Total=992 [2022-07-14 13:47:58,184 INFO L87 Difference]: Start difference. First operand 3223 states and 4405 transitions. Second operand has 30 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-14 13:48:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:06,330 INFO L93 Difference]: Finished difference Result 3694 states and 5278 transitions. [2022-07-14 13:48:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-14 13:48:06,331 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) Word has length 297 [2022-07-14 13:48:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:06,340 INFO L225 Difference]: With dead ends: 3694 [2022-07-14 13:48:06,340 INFO L226 Difference]: Without dead ends: 3693 [2022-07-14 13:48:06,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=281, Invalid=1691, Unknown=8, NotChecked=0, Total=1980 [2022-07-14 13:48:06,342 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 141 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:06,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 843 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 751 Invalid, 0 Unknown, 160 Unchecked, 0.4s Time] [2022-07-14 13:48:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2022-07-14 13:48:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3274. [2022-07-14 13:48:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 2578 states have (on average 1.1636927851047323) internal successors, (3000), 2572 states have internal predecessors, (3000), 515 states have call successors, (515), 124 states have call predecessors, (515), 174 states have return successors, (992), 577 states have call predecessors, (992), 515 states have call successors, (992) [2022-07-14 13:48:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4507 transitions. [2022-07-14 13:48:06,526 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4507 transitions. Word has length 297 [2022-07-14 13:48:06,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:06,527 INFO L495 AbstractCegarLoop]: Abstraction has 3274 states and 4507 transitions. [2022-07-14 13:48:06,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.0) internal successors, (84), 28 states have internal predecessors, (84), 10 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (13), 10 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-14 13:48:06,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4507 transitions. [2022-07-14 13:48:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-14 13:48:06,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:06,530 INFO L195 NwaCegarLoop]: trace histogram [31, 28, 18, 18, 18, 18, 16, 16, 15, 15, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:06,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-07-14 13:48:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-07-14 13:48:06,753 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1900955757, now seen corresponding path program 10 times [2022-07-14 13:48:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:06,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181188161] [2022-07-14 13:48:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:06,760 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:06,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049875113] [2022-07-14 13:48:06,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:48:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:06,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:06,761 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:06,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-07-14 13:48:06,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:48:06,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:06,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:48:06,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2635 backedges. 1417 proven. 226 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-07-14 13:48:07,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2635 backedges. 599 proven. 524 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-07-14 13:48:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:07,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181188161] [2022-07-14 13:48:07,887 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:07,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049875113] [2022-07-14 13:48:07,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049875113] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:07,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:07,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 23 [2022-07-14 13:48:07,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589370775] [2022-07-14 13:48:07,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-14 13:48:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-14 13:48:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-07-14 13:48:07,892 INFO L87 Difference]: Start difference. First operand 3274 states and 4507 transitions. Second operand has 23 states, 19 states have (on average 6.578947368421052) internal successors, (125), 23 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2022-07-14 13:48:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:08,729 INFO L93 Difference]: Finished difference Result 7215 states and 10278 transitions. [2022-07-14 13:48:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-14 13:48:08,730 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 6.578947368421052) internal successors, (125), 23 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) Word has length 317 [2022-07-14 13:48:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:08,740 INFO L225 Difference]: With dead ends: 7215 [2022-07-14 13:48:08,741 INFO L226 Difference]: Without dead ends: 4013 [2022-07-14 13:48:08,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=1006, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 13:48:08,750 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 195 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:08,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 621 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:48:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2022-07-14 13:48:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 3330. [2022-07-14 13:48:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 2625 states have (on average 1.1702857142857144) internal successors, (3072), 2625 states have internal predecessors, (3072), 526 states have call successors, (526), 135 states have call predecessors, (526), 172 states have return successors, (1024), 569 states have call predecessors, (1024), 526 states have call successors, (1024) [2022-07-14 13:48:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4622 transitions. [2022-07-14 13:48:08,920 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4622 transitions. Word has length 317 [2022-07-14 13:48:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:08,921 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 4622 transitions. [2022-07-14 13:48:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 6.578947368421052) internal successors, (125), 23 states have internal predecessors, (125), 15 states have call successors, (25), 2 states have call predecessors, (25), 9 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2022-07-14 13:48:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4622 transitions. [2022-07-14 13:48:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-14 13:48:08,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:08,923 INFO L195 NwaCegarLoop]: trace histogram [32, 29, 19, 19, 19, 19, 17, 17, 16, 16, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:08,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-07-14 13:48:09,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-07-14 13:48:09,123 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1420259763, now seen corresponding path program 11 times [2022-07-14 13:48:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970211219] [2022-07-14 13:48:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:09,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111440040] [2022-07-14 13:48:09,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:48:09,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:09,162 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:09,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-07-14 13:48:09,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-07-14 13:48:09,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:09,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 13:48:09,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 1559 proven. 156 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2022-07-14 13:48:09,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 687 proven. 425 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2022-07-14 13:48:10,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970211219] [2022-07-14 13:48:10,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:10,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111440040] [2022-07-14 13:48:10,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111440040] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:10,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:10,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 25 [2022-07-14 13:48:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134751072] [2022-07-14 13:48:10,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:10,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-14 13:48:10,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-14 13:48:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-14 13:48:10,366 INFO L87 Difference]: Start difference. First operand 3330 states and 4622 transitions. Second operand has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 25 states have internal predecessors, (123), 15 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2022-07-14 13:48:11,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:11,490 INFO L93 Difference]: Finished difference Result 7466 states and 10672 transitions. [2022-07-14 13:48:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 13:48:11,490 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 25 states have internal predecessors, (123), 15 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) Word has length 327 [2022-07-14 13:48:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:11,514 INFO L225 Difference]: With dead ends: 7466 [2022-07-14 13:48:11,514 INFO L226 Difference]: Without dead ends: 4297 [2022-07-14 13:48:11,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-07-14 13:48:11,524 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 304 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:11,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 765 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 13:48:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-07-14 13:48:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3508. [2022-07-14 13:48:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3508 states, 2777 states have (on average 1.177889809146561) internal successors, (3271), 2768 states have internal predecessors, (3271), 551 states have call successors, (551), 138 states have call predecessors, (551), 173 states have return successors, (1025), 601 states have call predecessors, (1025), 551 states have call successors, (1025) [2022-07-14 13:48:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3508 states to 3508 states and 4847 transitions. [2022-07-14 13:48:11,783 INFO L78 Accepts]: Start accepts. Automaton has 3508 states and 4847 transitions. Word has length 327 [2022-07-14 13:48:11,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:11,784 INFO L495 AbstractCegarLoop]: Abstraction has 3508 states and 4847 transitions. [2022-07-14 13:48:11,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.3478260869565215) internal successors, (123), 25 states have internal predecessors, (123), 15 states have call successors, (26), 2 states have call predecessors, (26), 8 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2022-07-14 13:48:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3508 states and 4847 transitions. [2022-07-14 13:48:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-14 13:48:11,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:11,786 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 18, 18, 18, 18, 18, 18, 17, 17, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:11,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-07-14 13:48:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:11,999 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1655823117, now seen corresponding path program 12 times [2022-07-14 13:48:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:12,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952742424] [2022-07-14 13:48:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:12,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:12,007 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:12,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257822502] [2022-07-14 13:48:12,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:48:12,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:12,008 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:12,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-07-14 13:48:12,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-14 13:48:12,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:12,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 13:48:12,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2846 backedges. 906 proven. 91 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2022-07-14 13:48:12,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2846 backedges. 906 proven. 119 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2022-07-14 13:48:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952742424] [2022-07-14 13:48:13,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257822502] [2022-07-14 13:48:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257822502] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:13,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:13,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 32 [2022-07-14 13:48:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989172311] [2022-07-14 13:48:13,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-14 13:48:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-14 13:48:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:48:13,408 INFO L87 Difference]: Start difference. First operand 3508 states and 4847 transitions. Second operand has 32 states, 30 states have (on average 3.9) internal successors, (117), 28 states have internal predecessors, (117), 17 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 12 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-14 13:48:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:15,089 INFO L93 Difference]: Finished difference Result 7668 states and 10999 transitions. [2022-07-14 13:48:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-14 13:48:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.9) internal successors, (117), 28 states have internal predecessors, (117), 17 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 12 states have call predecessors, (21), 14 states have call successors, (21) Word has length 327 [2022-07-14 13:48:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:15,102 INFO L225 Difference]: With dead ends: 7668 [2022-07-14 13:48:15,102 INFO L226 Difference]: Without dead ends: 4375 [2022-07-14 13:48:15,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=495, Invalid=2697, Unknown=0, NotChecked=0, Total=3192 [2022-07-14 13:48:15,111 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 200 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:15,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1283 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 13:48:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2022-07-14 13:48:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4074. [2022-07-14 13:48:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4074 states, 3220 states have (on average 1.170807453416149) internal successors, (3770), 3187 states have internal predecessors, (3770), 633 states have call successors, (633), 158 states have call predecessors, (633), 214 states have return successors, (1179), 728 states have call predecessors, (1179), 633 states have call successors, (1179) [2022-07-14 13:48:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 5582 transitions. [2022-07-14 13:48:15,326 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 5582 transitions. Word has length 327 [2022-07-14 13:48:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:15,326 INFO L495 AbstractCegarLoop]: Abstraction has 4074 states and 5582 transitions. [2022-07-14 13:48:15,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.9) internal successors, (117), 28 states have internal predecessors, (117), 17 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 12 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-14 13:48:15,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 5582 transitions. [2022-07-14 13:48:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-07-14 13:48:15,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:15,329 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 17, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:15,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-07-14 13:48:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:15,539 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:15,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1060225436, now seen corresponding path program 2 times [2022-07-14 13:48:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:15,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167215945] [2022-07-14 13:48:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:15,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941608824] [2022-07-14 13:48:15,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:48:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:15,549 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:15,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-07-14 13:48:15,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 13:48:15,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:15,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 13:48:15,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2022-07-14 13:48:15,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 13:48:15,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:15,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167215945] [2022-07-14 13:48:15,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:15,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941608824] [2022-07-14 13:48:15,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941608824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 13:48:15,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 13:48:15,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 13:48:15,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147018780] [2022-07-14 13:48:15,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 13:48:15,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 13:48:15,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:15,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 13:48:15,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 13:48:15,665 INFO L87 Difference]: Start difference. First operand 4074 states and 5582 transitions. Second operand has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 13:48:15,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:15,844 INFO L93 Difference]: Finished difference Result 4076 states and 5582 transitions. [2022-07-14 13:48:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 13:48:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 328 [2022-07-14 13:48:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:15,858 INFO L225 Difference]: With dead ends: 4076 [2022-07-14 13:48:15,858 INFO L226 Difference]: Without dead ends: 4072 [2022-07-14 13:48:15,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 13:48:15,860 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 26 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:15,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 222 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 13:48:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2022-07-14 13:48:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 4068. [2022-07-14 13:48:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 3216 states have (on average 1.1554726368159205) internal successors, (3716), 3183 states have internal predecessors, (3716), 632 states have call successors, (632), 158 states have call predecessors, (632), 214 states have return successors, (1177), 726 states have call predecessors, (1177), 632 states have call successors, (1177) [2022-07-14 13:48:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 5525 transitions. [2022-07-14 13:48:16,061 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 5525 transitions. Word has length 328 [2022-07-14 13:48:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:16,061 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 5525 transitions. [2022-07-14 13:48:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 13:48:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 5525 transitions. [2022-07-14 13:48:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-07-14 13:48:16,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:16,064 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:16,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-07-14 13:48:16,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:16,286 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash 319395959, now seen corresponding path program 3 times [2022-07-14 13:48:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:16,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676902019] [2022-07-14 13:48:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:16,294 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:16,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295928872] [2022-07-14 13:48:16,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:48:16,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:16,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:16,296 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:16,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-07-14 13:48:16,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-14 13:48:16,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:16,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:48:16,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2807 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2022-07-14 13:48:16,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:19,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:19,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676902019] [2022-07-14 13:48:19,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:19,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295928872] [2022-07-14 13:48:19,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295928872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:48:19,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:48:19,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-14 13:48:19,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183073815] [2022-07-14 13:48:19,048 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:48:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:48:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2022-07-14 13:48:19,053 INFO L87 Difference]: Start difference. First operand 4068 states and 5525 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:48:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:19,486 INFO L93 Difference]: Finished difference Result 4378 states and 5913 transitions. [2022-07-14 13:48:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 13:48:19,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 345 [2022-07-14 13:48:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:19,502 INFO L225 Difference]: With dead ends: 4378 [2022-07-14 13:48:19,503 INFO L226 Difference]: Without dead ends: 4341 [2022-07-14 13:48:19,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 342 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2022-07-14 13:48:19,506 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:19,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 201 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:48:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2022-07-14 13:48:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 3980. [2022-07-14 13:48:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3137 states have (on average 1.14950589735416) internal successors, (3606), 3130 states have internal predecessors, (3606), 630 states have call successors, (630), 154 states have call predecessors, (630), 207 states have return successors, (1174), 695 states have call predecessors, (1174), 630 states have call successors, (1174) [2022-07-14 13:48:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5410 transitions. [2022-07-14 13:48:19,749 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5410 transitions. Word has length 345 [2022-07-14 13:48:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:19,749 INFO L495 AbstractCegarLoop]: Abstraction has 3980 states and 5410 transitions. [2022-07-14 13:48:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 13:48:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5410 transitions. [2022-07-14 13:48:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-14 13:48:19,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:19,752 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 20, 20, 20, 20, 20, 20, 19, 19, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:19,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-07-14 13:48:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:19,967 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1120343315, now seen corresponding path program 13 times [2022-07-14 13:48:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:19,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920669426] [2022-07-14 13:48:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:19,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681788102] [2022-07-14 13:48:19,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:48:19,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:19,977 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:19,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-07-14 13:48:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:48:20,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-14 13:48:20,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 1746 proven. 21 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2022-07-14 13:48:20,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 724 proven. 202 refuted. 0 times theorem prover too weak. 2676 trivial. 0 not checked. [2022-07-14 13:48:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920669426] [2022-07-14 13:48:20,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681788102] [2022-07-14 13:48:20,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681788102] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:20,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:20,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 22 [2022-07-14 13:48:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759885056] [2022-07-14 13:48:20,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 13:48:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:20,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 13:48:20,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:48:20,954 INFO L87 Difference]: Start difference. First operand 3980 states and 5410 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-14 13:48:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:21,540 INFO L93 Difference]: Finished difference Result 7787 states and 10922 transitions. [2022-07-14 13:48:21,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:48:21,563 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) Word has length 361 [2022-07-14 13:48:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:21,576 INFO L225 Difference]: With dead ends: 7787 [2022-07-14 13:48:21,576 INFO L226 Difference]: Without dead ends: 3982 [2022-07-14 13:48:21,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 699 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2022-07-14 13:48:21,586 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 137 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:21,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 591 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:48:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-07-14 13:48:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3897. [2022-07-14 13:48:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3081 states have (on average 1.1522233041220382) internal successors, (3550), 3074 states have internal predecessors, (3550), 606 states have call successors, (606), 151 states have call predecessors, (606), 204 states have return successors, (1085), 671 states have call predecessors, (1085), 606 states have call successors, (1085) [2022-07-14 13:48:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5241 transitions. [2022-07-14 13:48:21,810 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5241 transitions. Word has length 361 [2022-07-14 13:48:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:21,810 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5241 transitions. [2022-07-14 13:48:21,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (19), 9 states have call predecessors, (19), 11 states have call successors, (19) [2022-07-14 13:48:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5241 transitions. [2022-07-14 13:48:21,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-07-14 13:48:21,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:21,813 INFO L195 NwaCegarLoop]: trace histogram [38, 35, 23, 23, 23, 23, 21, 21, 20, 20, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:48:21,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-07-14 13:48:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-07-14 13:48:22,036 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash 412271597, now seen corresponding path program 14 times [2022-07-14 13:48:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:22,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283662396] [2022-07-14 13:48:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:22,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:22,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126525563] [2022-07-14 13:48:22,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:48:22,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:22,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:22,050 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:22,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-07-14 13:48:22,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:48:22,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-14 13:48:22,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 812 proven. 134 refuted. 0 times theorem prover too weak. 3188 trivial. 0 not checked. [2022-07-14 13:48:22,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 812 proven. 135 refuted. 0 times theorem prover too weak. 3187 trivial. 0 not checked. [2022-07-14 13:48:23,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:23,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283662396] [2022-07-14 13:48:23,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:23,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126525563] [2022-07-14 13:48:23,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126525563] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:23,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:23,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 36 [2022-07-14 13:48:23,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301680074] [2022-07-14 13:48:23,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:23,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-14 13:48:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:23,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-14 13:48:23,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2022-07-14 13:48:23,127 INFO L87 Difference]: Start difference. First operand 3897 states and 5241 transitions. Second operand has 36 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 31 states have internal predecessors, (123), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-14 13:48:24,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:24,611 INFO L93 Difference]: Finished difference Result 7917 states and 10720 transitions. [2022-07-14 13:48:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-14 13:48:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 31 states have internal predecessors, (123), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) Word has length 381 [2022-07-14 13:48:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:24,621 INFO L225 Difference]: With dead ends: 7917 [2022-07-14 13:48:24,621 INFO L226 Difference]: Without dead ends: 4236 [2022-07-14 13:48:24,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=518, Invalid=3514, Unknown=0, NotChecked=0, Total=4032 [2022-07-14 13:48:24,627 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 260 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:24,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 741 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:48:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2022-07-14 13:48:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 4158. [2022-07-14 13:48:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4158 states, 3293 states have (on average 1.1506225326450046) internal successors, (3789), 3277 states have internal predecessors, (3789), 637 states have call successors, (637), 162 states have call predecessors, (637), 222 states have return successors, (1132), 718 states have call predecessors, (1132), 637 states have call successors, (1132) [2022-07-14 13:48:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4158 states to 4158 states and 5558 transitions. [2022-07-14 13:48:24,807 INFO L78 Accepts]: Start accepts. Automaton has 4158 states and 5558 transitions. Word has length 381 [2022-07-14 13:48:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:24,808 INFO L495 AbstractCegarLoop]: Abstraction has 4158 states and 5558 transitions. [2022-07-14 13:48:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.4166666666666665) internal successors, (123), 31 states have internal predecessors, (123), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-14 13:48:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4158 states and 5558 transitions. [2022-07-14 13:48:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-14 13:48:24,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:24,812 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 19, 18, 18, 18, 18, 18, 18, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:48:24,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-07-14 13:48:25,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-07-14 13:48:25,036 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:25,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash -818198999, now seen corresponding path program 7 times [2022-07-14 13:48:25,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:25,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689774519] [2022-07-14 13:48:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:25,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:25,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:25,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036380272] [2022-07-14 13:48:25,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:48:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:25,049 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:25,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-07-14 13:48:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:48:25,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 13:48:25,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3853 backedges. 1316 proven. 6 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2022-07-14 13:48:25,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3853 backedges. 392 proven. 43 refuted. 0 times theorem prover too weak. 3418 trivial. 0 not checked. [2022-07-14 13:48:25,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:25,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689774519] [2022-07-14 13:48:25,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:25,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036380272] [2022-07-14 13:48:25,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036380272] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:25,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:25,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-07-14 13:48:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099708670] [2022-07-14 13:48:25,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 13:48:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 13:48:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:48:25,721 INFO L87 Difference]: Start difference. First operand 4158 states and 5558 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-14 13:48:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:26,080 INFO L93 Difference]: Finished difference Result 8095 states and 10939 transitions. [2022-07-14 13:48:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 13:48:26,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 405 [2022-07-14 13:48:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:26,091 INFO L225 Difference]: With dead ends: 8095 [2022-07-14 13:48:26,091 INFO L226 Difference]: Without dead ends: 3879 [2022-07-14 13:48:26,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 798 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:48:26,102 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 64 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:26,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 239 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 13:48:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2022-07-14 13:48:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3695. [2022-07-14 13:48:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 2920 states have (on average 1.154109589041096) internal successors, (3370), 2902 states have internal predecessors, (3370), 568 states have call successors, (568), 158 states have call predecessors, (568), 201 states have return successors, (943), 634 states have call predecessors, (943), 567 states have call successors, (943) [2022-07-14 13:48:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4881 transitions. [2022-07-14 13:48:26,288 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4881 transitions. Word has length 405 [2022-07-14 13:48:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:26,288 INFO L495 AbstractCegarLoop]: Abstraction has 3695 states and 4881 transitions. [2022-07-14 13:48:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 7 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-14 13:48:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4881 transitions. [2022-07-14 13:48:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-07-14 13:48:26,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:26,292 INFO L195 NwaCegarLoop]: trace histogram [39, 36, 20, 20, 20, 20, 19, 18, 18, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:48:26,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-07-14 13:48:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-07-14 13:48:26,515 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1094674633, now seen corresponding path program 8 times [2022-07-14 13:48:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415741728] [2022-07-14 13:48:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:26,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:26,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263520902] [2022-07-14 13:48:26,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:48:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:26,526 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-07-14 13:48:26,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:48:26,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:26,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 13:48:26,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:48:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4114 backedges. 1489 proven. 46 refuted. 0 times theorem prover too weak. 2579 trivial. 0 not checked. [2022-07-14 13:48:26,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:48:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4114 backedges. 565 proven. 127 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2022-07-14 13:48:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:48:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415741728] [2022-07-14 13:48:27,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:48:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263520902] [2022-07-14 13:48:27,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263520902] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:48:27,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:48:27,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2022-07-14 13:48:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325384948] [2022-07-14 13:48:27,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:48:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 13:48:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:48:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 13:48:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-07-14 13:48:27,465 INFO L87 Difference]: Start difference. First operand 3695 states and 4881 transitions. Second operand has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2022-07-14 13:48:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:48:28,227 INFO L93 Difference]: Finished difference Result 7042 states and 9319 transitions. [2022-07-14 13:48:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 13:48:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) Word has length 415 [2022-07-14 13:48:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:48:28,233 INFO L225 Difference]: With dead ends: 7042 [2022-07-14 13:48:28,233 INFO L226 Difference]: Without dead ends: 3455 [2022-07-14 13:48:28,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 808 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-07-14 13:48:28,238 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 152 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:48:28,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 228 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 13:48:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2022-07-14 13:48:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3028. [2022-07-14 13:48:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2425 states have (on average 1.1002061855670102) internal successors, (2668), 2361 states have internal predecessors, (2668), 389 states have call successors, (389), 141 states have call predecessors, (389), 208 states have return successors, (769), 525 states have call predecessors, (769), 388 states have call successors, (769) [2022-07-14 13:48:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 3826 transitions. [2022-07-14 13:48:28,344 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 3826 transitions. Word has length 415 [2022-07-14 13:48:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:48:28,344 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 3826 transitions. [2022-07-14 13:48:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.238095238095238) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 10 states have call predecessors, (20), 11 states have call successors, (20) [2022-07-14 13:48:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 3826 transitions. [2022-07-14 13:48:28,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-07-14 13:48:28,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:48:28,346 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 19, 19, 19, 19, 19, 19, 19, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:48:28,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-07-14 13:48:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:28,547 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:48:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:48:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash 258788233, now seen corresponding path program 9 times [2022-07-14 13:48:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:48:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81423544] [2022-07-14 13:48:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:48:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:48:28,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:48:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633204125] [2022-07-14 13:48:28,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:48:28,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:48:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:48:28,558 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:48:28,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-07-14 13:48:28,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-14 13:48:28,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:48:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-14 13:48:28,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:49:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 911 proven. 49 refuted. 2 times theorem prover too weak. 3144 trivial. 0 not checked. [2022-07-14 13:49:05,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:49:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:49:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81423544] [2022-07-14 13:49:08,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:49:08,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633204125] [2022-07-14 13:49:08,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633204125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:49:08,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:49:08,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-14 13:49:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44666219] [2022-07-14 13:49:08,328 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:49:08,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 13:49:08,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:49:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 13:49:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=251, Unknown=13, NotChecked=0, Total=342 [2022-07-14 13:49:08,329 INFO L87 Difference]: Start difference. First operand 3028 states and 3826 transitions. Second operand has 17 states, 16 states have (on average 4.25) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-14 13:49:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:49:42,951 INFO L93 Difference]: Finished difference Result 3188 states and 4178 transitions. [2022-07-14 13:49:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 13:49:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 415 [2022-07-14 13:49:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:49:42,960 INFO L225 Difference]: With dead ends: 3188 [2022-07-14 13:49:42,960 INFO L226 Difference]: Without dead ends: 3187 [2022-07-14 13:49:42,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 72.0s TimeCoverageRelationStatistics Valid=141, Invalid=439, Unknown=20, NotChecked=0, Total=600 [2022-07-14 13:49:42,961 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 42 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:49:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 255 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-07-14 13:49:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2022-07-14 13:49:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3049. [2022-07-14 13:49:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3049 states, 2441 states have (on average 1.0987300286767718) internal successors, (2682), 2379 states have internal predecessors, (2682), 389 states have call successors, (389), 141 states have call predecessors, (389), 213 states have return successors, (783), 528 states have call predecessors, (783), 388 states have call successors, (783) [2022-07-14 13:49:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 3854 transitions. [2022-07-14 13:49:43,064 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 3854 transitions. Word has length 415 [2022-07-14 13:49:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:49:43,064 INFO L495 AbstractCegarLoop]: Abstraction has 3049 states and 3854 transitions. [2022-07-14 13:49:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.25) internal successors, (68), 17 states have internal predecessors, (68), 4 states have call successors, (9), 1 states have call predecessors, (9), 6 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-14 13:49:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 3854 transitions. [2022-07-14 13:49:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-07-14 13:49:43,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:49:43,067 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 21, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:49:43,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-07-14 13:49:43,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:49:43,267 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:49:43,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:49:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash 547096469, now seen corresponding path program 1 times [2022-07-14 13:49:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:49:43,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125051258] [2022-07-14 13:49:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:49:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:49:43,276 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:49:43,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348387202] [2022-07-14 13:49:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:49:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:49:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:49:43,278 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:49:43,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-07-14 13:49:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:49:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 13:49:43,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:49:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 297 proven. 12 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2022-07-14 13:49:43,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:49:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 297 proven. 12 refuted. 0 times theorem prover too weak. 3547 trivial. 0 not checked. [2022-07-14 13:49:44,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:49:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125051258] [2022-07-14 13:49:44,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:49:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348387202] [2022-07-14 13:49:44,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348387202] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:49:44,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:49:44,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-14 13:49:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453461408] [2022-07-14 13:49:44,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:49:44,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 13:49:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:49:44,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 13:49:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:49:44,464 INFO L87 Difference]: Start difference. First operand 3049 states and 3854 transitions. Second operand has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-14 13:49:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:49:45,158 INFO L93 Difference]: Finished difference Result 4856 states and 6134 transitions. [2022-07-14 13:49:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:49:45,161 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 416 [2022-07-14 13:49:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:49:45,166 INFO L225 Difference]: With dead ends: 4856 [2022-07-14 13:49:45,166 INFO L226 Difference]: Without dead ends: 2347 [2022-07-14 13:49:45,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 816 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:49:45,171 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 67 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:49:45,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 294 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:49:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2022-07-14 13:49:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2304. [2022-07-14 13:49:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1833 states have (on average 1.0900163666121112) internal successors, (1998), 1796 states have internal predecessors, (1998), 289 states have call successors, (289), 118 states have call predecessors, (289), 176 states have return successors, (556), 389 states have call predecessors, (556), 288 states have call successors, (556) [2022-07-14 13:49:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2843 transitions. [2022-07-14 13:49:45,249 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2843 transitions. Word has length 416 [2022-07-14 13:49:45,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:49:45,249 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 2843 transitions. [2022-07-14 13:49:45,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-14 13:49:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2843 transitions. [2022-07-14 13:49:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-07-14 13:49:45,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:49:45,251 INFO L195 NwaCegarLoop]: trace histogram [41, 38, 22, 22, 22, 22, 20, 20, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:49:45,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-07-14 13:49:45,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-07-14 13:49:45,452 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:49:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:49:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash 797955593, now seen corresponding path program 10 times [2022-07-14 13:49:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:49:45,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743408541] [2022-07-14 13:49:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:49:45,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:49:45,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:49:45,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607716523] [2022-07-14 13:49:45,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:49:45,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:49:45,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:49:45,461 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:49:45,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-07-14 13:49:45,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:49:45,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:49:45,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-14 13:49:45,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:49:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 1670 proven. 310 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2022-07-14 13:49:46,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:49:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 1670 proven. 344 refuted. 0 times theorem prover too weak. 2636 trivial. 0 not checked. [2022-07-14 13:49:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:49:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743408541] [2022-07-14 13:49:50,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:49:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607716523] [2022-07-14 13:49:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607716523] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:49:50,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:49:50,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 32] total 45 [2022-07-14 13:49:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500534678] [2022-07-14 13:49:50,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:49:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-14 13:49:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:49:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-14 13:49:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2022-07-14 13:49:50,566 INFO L87 Difference]: Start difference. First operand 2304 states and 2843 transitions. Second operand has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2022-07-14 13:49:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:49:58,888 INFO L93 Difference]: Finished difference Result 7947 states and 11228 transitions. [2022-07-14 13:49:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-07-14 13:49:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 435 [2022-07-14 13:49:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:49:58,905 INFO L225 Difference]: With dead ends: 7947 [2022-07-14 13:49:58,905 INFO L226 Difference]: Without dead ends: 5991 [2022-07-14 13:49:58,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 837 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2603 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1308, Invalid=9612, Unknown=0, NotChecked=0, Total=10920 [2022-07-14 13:49:58,914 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 861 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:49:58,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 681 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-14 13:49:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2022-07-14 13:49:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 4147. [2022-07-14 13:49:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 3394 states have (on average 1.1308190925162052) internal successors, (3838), 3296 states have internal predecessors, (3838), 523 states have call successors, (523), 187 states have call predecessors, (523), 224 states have return successors, (1240), 663 states have call predecessors, (1240), 520 states have call successors, (1240) [2022-07-14 13:49:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5601 transitions. [2022-07-14 13:49:59,151 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5601 transitions. Word has length 435 [2022-07-14 13:49:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:49:59,152 INFO L495 AbstractCegarLoop]: Abstraction has 4147 states and 5601 transitions. [2022-07-14 13:49:59,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2022-07-14 13:49:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5601 transitions. [2022-07-14 13:49:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-07-14 13:49:59,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:49:59,155 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:49:59,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-07-14 13:49:59,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:49:59,363 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:49:59,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:49:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1731179163, now seen corresponding path program 2 times [2022-07-14 13:49:59,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:49:59,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755226703] [2022-07-14 13:49:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:49:59,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:49:59,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:49:59,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121152198] [2022-07-14 13:49:59,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:49:59,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:49:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:49:59,378 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:49:59,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-07-14 13:49:59,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:49:59,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:49:59,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 13:49:59,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:49:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6463 backedges. 2 proven. 174 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2022-07-14 13:49:59,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6463 backedges. 2 proven. 174 refuted. 0 times theorem prover too weak. 6287 trivial. 0 not checked. [2022-07-14 13:50:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755226703] [2022-07-14 13:50:00,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:00,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121152198] [2022-07-14 13:50:00,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121152198] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:00,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:00,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-07-14 13:50:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981064547] [2022-07-14 13:50:00,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 13:50:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 13:50:00,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-07-14 13:50:00,554 INFO L87 Difference]: Start difference. First operand 4147 states and 5601 transitions. Second operand has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 states have internal predecessors, (122), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2022-07-14 13:50:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:03,808 INFO L93 Difference]: Finished difference Result 5419 states and 7478 transitions. [2022-07-14 13:50:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-07-14 13:50:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 states have internal predecessors, (122), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) Word has length 520 [2022-07-14 13:50:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:03,818 INFO L225 Difference]: With dead ends: 5419 [2022-07-14 13:50:03,818 INFO L226 Difference]: Without dead ends: 5388 [2022-07-14 13:50:03,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1014 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3897 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2321, Invalid=8809, Unknown=0, NotChecked=0, Total=11130 [2022-07-14 13:50:03,821 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 309 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:03,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 625 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-14 13:50:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2022-07-14 13:50:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 4129. [2022-07-14 13:50:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 3377 states have (on average 1.0802487414865265) internal successors, (3648), 3285 states have internal predecessors, (3648), 523 states have call successors, (523), 187 states have call predecessors, (523), 224 states have return successors, (1218), 656 states have call predecessors, (1218), 520 states have call successors, (1218) [2022-07-14 13:50:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 5389 transitions. [2022-07-14 13:50:04,043 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 5389 transitions. Word has length 520 [2022-07-14 13:50:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:04,044 INFO L495 AbstractCegarLoop]: Abstraction has 4129 states and 5389 transitions. [2022-07-14 13:50:04,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 states have internal predecessors, (122), 13 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2022-07-14 13:50:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 5389 transitions. [2022-07-14 13:50:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-14 13:50:04,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:04,046 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 21, 19, 19, 19, 19, 19, 19, 19, 19, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:50:04,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-07-14 13:50:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:04,255 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1519346685, now seen corresponding path program 4 times [2022-07-14 13:50:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:04,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2790729] [2022-07-14 13:50:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:04,264 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:04,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387568584] [2022-07-14 13:50:04,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:50:04,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:04,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:04,265 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:04,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-07-14 13:50:04,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:50:04,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:04,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 13:50:04,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 1057 proven. 257 refuted. 0 times theorem prover too weak. 3227 trivial. 0 not checked. [2022-07-14 13:50:04,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 1057 proven. 265 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2022-07-14 13:50:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2790729] [2022-07-14 13:50:06,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387568584] [2022-07-14 13:50:06,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387568584] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:06,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:06,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 22 [2022-07-14 13:50:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275293172] [2022-07-14 13:50:06,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 13:50:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 13:50:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:50:06,732 INFO L87 Difference]: Start difference. First operand 4129 states and 5389 transitions. Second operand has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-14 13:50:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:09,028 INFO L93 Difference]: Finished difference Result 4510 states and 6038 transitions. [2022-07-14 13:50:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-14 13:50:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) Word has length 429 [2022-07-14 13:50:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:09,040 INFO L225 Difference]: With dead ends: 4510 [2022-07-14 13:50:09,040 INFO L226 Difference]: Without dead ends: 4409 [2022-07-14 13:50:09,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 838 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2022-07-14 13:50:09,041 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 179 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:09,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 822 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 13:50:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-14 13:50:09,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4098. [2022-07-14 13:50:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 3354 states have (on average 1.0793082886106142) internal successors, (3620), 3261 states have internal predecessors, (3620), 517 states have call successors, (517), 185 states have call predecessors, (517), 222 states have return successors, (1197), 651 states have call predecessors, (1197), 515 states have call successors, (1197) [2022-07-14 13:50:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5334 transitions. [2022-07-14 13:50:09,251 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5334 transitions. Word has length 429 [2022-07-14 13:50:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:09,251 INFO L495 AbstractCegarLoop]: Abstraction has 4098 states and 5334 transitions. [2022-07-14 13:50:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) [2022-07-14 13:50:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5334 transitions. [2022-07-14 13:50:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-07-14 13:50:09,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:09,255 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:50:09,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-07-14 13:50:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-07-14 13:50:09,455 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:09,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 727114295, now seen corresponding path program 5 times [2022-07-14 13:50:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:09,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123643386] [2022-07-14 13:50:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:09,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:09,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:09,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373984672] [2022-07-14 13:50:09,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:50:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:09,469 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:09,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-07-14 13:50:09,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-07-14 13:50:09,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:50:09,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 406 proven. 29 refuted. 0 times theorem prover too weak. 6950 trivial. 0 not checked. [2022-07-14 13:50:09,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123643386] [2022-07-14 13:50:10,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373984672] [2022-07-14 13:50:10,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373984672] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 13:50:10,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-14 13:50:10,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-14 13:50:10,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022978014] [2022-07-14 13:50:10,214 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:10,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 13:50:10,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 13:50:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:50:10,214 INFO L87 Difference]: Start difference. First operand 4098 states and 5334 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 13:50:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:10,915 INFO L93 Difference]: Finished difference Result 4440 states and 5748 transitions. [2022-07-14 13:50:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 13:50:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 533 [2022-07-14 13:50:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:10,956 INFO L225 Difference]: With dead ends: 4440 [2022-07-14 13:50:10,956 INFO L226 Difference]: Without dead ends: 4422 [2022-07-14 13:50:10,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:50:10,957 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 29 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:10,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 265 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 13:50:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-07-14 13:50:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4113. [2022-07-14 13:50:11,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 3357 states have (on average 1.07536490914507) internal successors, (3610), 3279 states have internal predecessors, (3610), 529 states have call successors, (529), 185 states have call predecessors, (529), 222 states have return successors, (1225), 648 states have call predecessors, (1225), 526 states have call successors, (1225) [2022-07-14 13:50:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5364 transitions. [2022-07-14 13:50:11,154 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5364 transitions. Word has length 533 [2022-07-14 13:50:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:11,154 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5364 transitions. [2022-07-14 13:50:11,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-14 13:50:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5364 transitions. [2022-07-14 13:50:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-07-14 13:50:11,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:11,159 INFO L195 NwaCegarLoop]: trace histogram [49, 46, 31, 31, 31, 31, 29, 29, 28, 28, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:50:11,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-07-14 13:50:11,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:11,363 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash -346917305, now seen corresponding path program 15 times [2022-07-14 13:50:11,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:11,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781597464] [2022-07-14 13:50:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:11,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:11,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:11,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546608003] [2022-07-14 13:50:11,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:50:11,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:11,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:11,374 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:11,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-07-14 13:50:11,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-14 13:50:11,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:11,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 13:50:11,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7273 backedges. 3964 proven. 324 refuted. 0 times theorem prover too weak. 2985 trivial. 0 not checked. [2022-07-14 13:50:12,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7273 backedges. 1396 proven. 907 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2022-07-14 13:50:16,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781597464] [2022-07-14 13:50:16,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:16,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546608003] [2022-07-14 13:50:16,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546608003] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:16,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:16,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 27 [2022-07-14 13:50:16,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98444750] [2022-07-14 13:50:16,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:16,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 13:50:16,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 13:50:16,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:50:16,240 INFO L87 Difference]: Start difference. First operand 4113 states and 5364 transitions. Second operand has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 15 states have call successors, (35), 2 states have call predecessors, (35), 10 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-14 13:50:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:19,250 INFO L93 Difference]: Finished difference Result 9312 states and 12783 transitions. [2022-07-14 13:50:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 13:50:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 15 states have call successors, (35), 2 states have call predecessors, (35), 10 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) Word has length 495 [2022-07-14 13:50:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:19,263 INFO L225 Difference]: With dead ends: 9312 [2022-07-14 13:50:19,263 INFO L226 Difference]: Without dead ends: 5464 [2022-07-14 13:50:19,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640 [2022-07-14 13:50:19,269 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 186 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:19,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 555 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-14 13:50:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2022-07-14 13:50:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 4938. [2022-07-14 13:50:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4938 states, 4032 states have (on average 1.0798611111111112) internal successors, (4354), 3934 states have internal predecessors, (4354), 647 states have call successors, (647), 215 states have call predecessors, (647), 254 states have return successors, (1535), 788 states have call predecessors, (1535), 644 states have call successors, (1535) [2022-07-14 13:50:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4938 states to 4938 states and 6536 transitions. [2022-07-14 13:50:19,542 INFO L78 Accepts]: Start accepts. Automaton has 4938 states and 6536 transitions. Word has length 495 [2022-07-14 13:50:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:19,542 INFO L495 AbstractCegarLoop]: Abstraction has 4938 states and 6536 transitions. [2022-07-14 13:50:19,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.592592592592593) internal successors, (151), 27 states have internal predecessors, (151), 15 states have call successors, (35), 2 states have call predecessors, (35), 10 states have return successors, (36), 15 states have call predecessors, (36), 15 states have call successors, (36) [2022-07-14 13:50:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4938 states and 6536 transitions. [2022-07-14 13:50:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-14 13:50:19,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:19,545 INFO L195 NwaCegarLoop]: trace histogram [50, 47, 32, 32, 32, 32, 30, 30, 29, 29, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:50:19,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-07-14 13:50:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-07-14 13:50:19,746 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2056052967, now seen corresponding path program 16 times [2022-07-14 13:50:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101665747] [2022-07-14 13:50:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:19,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:19,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949866901] [2022-07-14 13:50:19,757 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-14 13:50:19,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:19,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:19,758 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:19,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-07-14 13:50:19,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-14 13:50:19,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:19,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 13:50:19,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7642 backedges. 2024 proven. 434 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2022-07-14 13:50:20,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7642 backedges. 2024 proven. 463 refuted. 0 times theorem prover too weak. 5155 trivial. 0 not checked. [2022-07-14 13:50:23,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101665747] [2022-07-14 13:50:23,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949866901] [2022-07-14 13:50:23,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949866901] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:23,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:23,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 27 [2022-07-14 13:50:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882630639] [2022-07-14 13:50:23,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 13:50:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 13:50:23,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:50:23,755 INFO L87 Difference]: Start difference. First operand 4938 states and 6536 transitions. Second operand has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-14 13:50:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:27,026 INFO L93 Difference]: Finished difference Result 10394 states and 14418 transitions. [2022-07-14 13:50:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-14 13:50:27,029 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) Word has length 505 [2022-07-14 13:50:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:27,043 INFO L225 Difference]: With dead ends: 10394 [2022-07-14 13:50:27,043 INFO L226 Difference]: Without dead ends: 5779 [2022-07-14 13:50:27,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 988 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=423, Invalid=1739, Unknown=0, NotChecked=0, Total=2162 [2022-07-14 13:50:27,052 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 253 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:27,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 506 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-14 13:50:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2022-07-14 13:50:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5237. [2022-07-14 13:50:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 4252 states have (on average 1.0776105362182502) internal successors, (4582), 4149 states have internal predecessors, (4582), 719 states have call successors, (719), 234 states have call predecessors, (719), 261 states have return successors, (1780), 853 states have call predecessors, (1780), 716 states have call successors, (1780) [2022-07-14 13:50:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7081 transitions. [2022-07-14 13:50:27,344 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7081 transitions. Word has length 505 [2022-07-14 13:50:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:27,344 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7081 transitions. [2022-07-14 13:50:27,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-14 13:50:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7081 transitions. [2022-07-14 13:50:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-07-14 13:50:27,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:27,347 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 24, 22, 22, 22, 22, 22, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:50:27,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-07-14 13:50:27,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-07-14 13:50:27,548 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -308250554, now seen corresponding path program 6 times [2022-07-14 13:50:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:27,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430375297] [2022-07-14 13:50:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:27,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:27,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210924266] [2022-07-14 13:50:27,558 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:50:27,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:27,559 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:27,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-07-14 13:50:27,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-14 13:50:27,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:27,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 13:50:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 1636 proven. 1 refuted. 0 times theorem prover too weak. 4438 trivial. 0 not checked. [2022-07-14 13:50:27,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 244 proven. 19 refuted. 0 times theorem prover too weak. 5812 trivial. 0 not checked. [2022-07-14 13:50:28,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:28,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430375297] [2022-07-14 13:50:28,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:28,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210924266] [2022-07-14 13:50:28,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210924266] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:28,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:28,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-07-14 13:50:28,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805093404] [2022-07-14 13:50:28,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:28,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 13:50:28,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:28,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 13:50:28,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-14 13:50:28,242 INFO L87 Difference]: Start difference. First operand 5237 states and 7081 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-14 13:50:29,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:29,103 INFO L93 Difference]: Finished difference Result 5462 states and 7326 transitions. [2022-07-14 13:50:29,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:50:29,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 498 [2022-07-14 13:50:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:29,117 INFO L225 Difference]: With dead ends: 5462 [2022-07-14 13:50:29,117 INFO L226 Difference]: Without dead ends: 5209 [2022-07-14 13:50:29,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 985 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:50:29,119 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:29,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 322 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:50:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2022-07-14 13:50:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 5209. [2022-07-14 13:50:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 4234 states have (on average 1.0772319319792159) internal successors, (4561), 4131 states have internal predecessors, (4561), 710 states have call successors, (710), 234 states have call predecessors, (710), 260 states have return successors, (1753), 843 states have call predecessors, (1753), 708 states have call successors, (1753) [2022-07-14 13:50:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 7024 transitions. [2022-07-14 13:50:29,372 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 7024 transitions. Word has length 498 [2022-07-14 13:50:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:29,373 INFO L495 AbstractCegarLoop]: Abstraction has 5209 states and 7024 transitions. [2022-07-14 13:50:29,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-14 13:50:29,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 7024 transitions. [2022-07-14 13:50:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-14 13:50:29,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:29,376 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 31, 31, 31, 31, 31, 31, 30, 30, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 13:50:29,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-07-14 13:50:29,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:29,577 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash -70216537, now seen corresponding path program 17 times [2022-07-14 13:50:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:29,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72572888] [2022-07-14 13:50:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:29,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:29,589 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:29,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980934723] [2022-07-14 13:50:29,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:50:29,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:29,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:29,591 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:29,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-07-14 13:50:29,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-07-14 13:50:29,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:29,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 13:50:29,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7634 backedges. 1699 proven. 120 refuted. 0 times theorem prover too weak. 5815 trivial. 0 not checked. [2022-07-14 13:50:30,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:34,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7634 backedges. 1699 proven. 148 refuted. 0 times theorem prover too weak. 5787 trivial. 0 not checked. [2022-07-14 13:50:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72572888] [2022-07-14 13:50:34,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:34,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980934723] [2022-07-14 13:50:34,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980934723] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:34,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:34,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 42 [2022-07-14 13:50:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730492481] [2022-07-14 13:50:34,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-14 13:50:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-14 13:50:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1512, Unknown=0, NotChecked=0, Total=1722 [2022-07-14 13:50:34,207 INFO L87 Difference]: Start difference. First operand 5209 states and 7024 transitions. Second operand has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 39 states have internal predecessors, (151), 22 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 19 states have call predecessors, (28), 20 states have call successors, (28) [2022-07-14 13:50:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:38,731 INFO L93 Difference]: Finished difference Result 10813 states and 14962 transitions. [2022-07-14 13:50:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 13:50:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 39 states have internal predecessors, (151), 22 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 19 states have call predecessors, (28), 20 states have call successors, (28) Word has length 505 [2022-07-14 13:50:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:38,751 INFO L225 Difference]: With dead ends: 10813 [2022-07-14 13:50:38,751 INFO L226 Difference]: Without dead ends: 5934 [2022-07-14 13:50:38,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 970 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=571, Invalid=3719, Unknown=0, NotChecked=0, Total=4290 [2022-07-14 13:50:38,761 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 264 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 910 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-14 13:50:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-07-14 13:50:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5706. [2022-07-14 13:50:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 4636 states have (on average 1.077653149266609) internal successors, (4996), 4521 states have internal predecessors, (4996), 777 states have call successors, (777), 257 states have call predecessors, (777), 288 states have return successors, (1935), 927 states have call predecessors, (1935), 775 states have call successors, (1935) [2022-07-14 13:50:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 7708 transitions. [2022-07-14 13:50:39,088 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 7708 transitions. Word has length 505 [2022-07-14 13:50:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:39,089 INFO L495 AbstractCegarLoop]: Abstraction has 5706 states and 7708 transitions. [2022-07-14 13:50:39,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5952380952380953) internal successors, (151), 39 states have internal predecessors, (151), 22 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 19 states have call predecessors, (28), 20 states have call successors, (28) [2022-07-14 13:50:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 7708 transitions. [2022-07-14 13:50:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-07-14 13:50:39,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:39,092 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 24, 22, 22, 22, 22, 22, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:50:39,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-07-14 13:50:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:39,293 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash 308826566, now seen corresponding path program 7 times [2022-07-14 13:50:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:39,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139042451] [2022-07-14 13:50:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:39,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:39,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424040460] [2022-07-14 13:50:39,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:50:39,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:39,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:39,305 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:39,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-07-14 13:50:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:50:39,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 13:50:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 2316 proven. 2 refuted. 0 times theorem prover too weak. 3757 trivial. 0 not checked. [2022-07-14 13:50:40,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 573 proven. 98 refuted. 0 times theorem prover too weak. 5404 trivial. 0 not checked. [2022-07-14 13:50:41,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:41,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139042451] [2022-07-14 13:50:41,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:41,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424040460] [2022-07-14 13:50:41,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424040460] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:41,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:41,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-07-14 13:50:41,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745497769] [2022-07-14 13:50:41,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:41,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-14 13:50:41,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:41,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-14 13:50:41,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-07-14 13:50:41,403 INFO L87 Difference]: Start difference. First operand 5706 states and 7708 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) [2022-07-14 13:50:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:42,725 INFO L93 Difference]: Finished difference Result 10754 states and 14747 transitions. [2022-07-14 13:50:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 13:50:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) Word has length 498 [2022-07-14 13:50:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:42,742 INFO L225 Difference]: With dead ends: 10754 [2022-07-14 13:50:42,742 INFO L226 Difference]: Without dead ends: 5858 [2022-07-14 13:50:42,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 978 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-07-14 13:50:42,753 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 95 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:42,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 365 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 13:50:42,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5858 states. [2022-07-14 13:50:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5858 to 5706. [2022-07-14 13:50:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 4636 states have (on average 1.077653149266609) internal successors, (4996), 4521 states have internal predecessors, (4996), 777 states have call successors, (777), 257 states have call predecessors, (777), 288 states have return successors, (1925), 927 states have call predecessors, (1925), 775 states have call successors, (1925) [2022-07-14 13:50:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 7698 transitions. [2022-07-14 13:50:43,081 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 7698 transitions. Word has length 498 [2022-07-14 13:50:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:43,081 INFO L495 AbstractCegarLoop]: Abstraction has 5706 states and 7698 transitions. [2022-07-14 13:50:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 10 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 10 states have call successors, (25) [2022-07-14 13:50:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 7698 transitions. [2022-07-14 13:50:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-07-14 13:50:43,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:43,085 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 29, 29, 29, 29, 29, 29, 29, 29, 27, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:50:43,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-07-14 13:50:43,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-07-14 13:50:43,286 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1063460428, now seen corresponding path program 8 times [2022-07-14 13:50:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:43,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713824160] [2022-07-14 13:50:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:43,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:43,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:43,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236816994] [2022-07-14 13:50:43,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 13:50:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:43,298 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:43,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-07-14 13:50:43,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 13:50:43,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:43,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 13:50:43,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9305 backedges. 3821 proven. 100 refuted. 0 times theorem prover too weak. 5384 trivial. 0 not checked. [2022-07-14 13:50:43,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9305 backedges. 168 proven. 118 refuted. 0 times theorem prover too weak. 9019 trivial. 0 not checked. [2022-07-14 13:50:44,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:44,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713824160] [2022-07-14 13:50:44,871 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:44,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236816994] [2022-07-14 13:50:44,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236816994] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:44,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:44,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2022-07-14 13:50:44,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037909511] [2022-07-14 13:50:44,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:44,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-14 13:50:44,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-14 13:50:44,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-07-14 13:50:44,873 INFO L87 Difference]: Start difference. First operand 5706 states and 7698 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 12 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2022-07-14 13:50:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:46,936 INFO L93 Difference]: Finished difference Result 6747 states and 8967 transitions. [2022-07-14 13:50:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-14 13:50:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 12 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) Word has length 602 [2022-07-14 13:50:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:46,951 INFO L225 Difference]: With dead ends: 6747 [2022-07-14 13:50:46,951 INFO L226 Difference]: Without dead ends: 5800 [2022-07-14 13:50:46,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1219 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2022-07-14 13:50:46,953 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 70 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:46,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 692 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-14 13:50:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2022-07-14 13:50:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5756. [2022-07-14 13:50:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 4682 states have (on average 1.0758222981631782) internal successors, (5037), 4564 states have internal predecessors, (5037), 781 states have call successors, (781), 257 states have call predecessors, (781), 288 states have return successors, (1932), 934 states have call predecessors, (1932), 779 states have call successors, (1932) [2022-07-14 13:50:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 7750 transitions. [2022-07-14 13:50:47,285 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 7750 transitions. Word has length 602 [2022-07-14 13:50:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:47,286 INFO L495 AbstractCegarLoop]: Abstraction has 5756 states and 7750 transitions. [2022-07-14 13:50:47,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 12 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2022-07-14 13:50:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 7750 transitions. [2022-07-14 13:50:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-07-14 13:50:47,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:47,291 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:50:47,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-07-14 13:50:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-07-14 13:50:47,507 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1571253126, now seen corresponding path program 9 times [2022-07-14 13:50:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:47,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653184813] [2022-07-14 13:50:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:47,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:47,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301855896] [2022-07-14 13:50:47,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 13:50:47,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:47,519 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:47,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-07-14 13:50:47,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-14 13:50:47,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:47,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-14 13:50:47,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 1205 proven. 174 refuted. 0 times theorem prover too weak. 5338 trivial. 0 not checked. [2022-07-14 13:50:48,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6717 backedges. 1205 proven. 181 refuted. 0 times theorem prover too weak. 5331 trivial. 0 not checked. [2022-07-14 13:50:51,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:51,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653184813] [2022-07-14 13:50:51,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:51,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301855896] [2022-07-14 13:50:51,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301855896] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:51,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:51,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 22 [2022-07-14 13:50:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174589073] [2022-07-14 13:50:51,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-14 13:50:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:51,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-14 13:50:51,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-14 13:50:51,018 INFO L87 Difference]: Start difference. First operand 5756 states and 7750 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-14 13:50:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:50:53,527 INFO L93 Difference]: Finished difference Result 12212 states and 17342 transitions. [2022-07-14 13:50:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 13:50:53,531 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 10 states have call successors, (23) Word has length 518 [2022-07-14 13:50:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:50:53,555 INFO L225 Difference]: With dead ends: 12212 [2022-07-14 13:50:53,555 INFO L226 Difference]: Without dead ends: 7481 [2022-07-14 13:50:53,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-07-14 13:50:53,568 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 122 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-14 13:50:53,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 429 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-14 13:50:53,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2022-07-14 13:50:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 6866. [2022-07-14 13:50:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 5628 states have (on average 1.0813788201847903) internal successors, (6086), 5464 states have internal predecessors, (6086), 904 states have call successors, (904), 272 states have call predecessors, (904), 329 states have return successors, (2720), 1129 states have call predecessors, (2720), 902 states have call successors, (2720) [2022-07-14 13:50:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 9710 transitions. [2022-07-14 13:50:53,987 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 9710 transitions. Word has length 518 [2022-07-14 13:50:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:50:53,987 INFO L495 AbstractCegarLoop]: Abstraction has 6866 states and 9710 transitions. [2022-07-14 13:50:53,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (22), 2 states have call predecessors, (22), 7 states have return successors, (23), 11 states have call predecessors, (23), 10 states have call successors, (23) [2022-07-14 13:50:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 9710 transitions. [2022-07-14 13:50:53,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-07-14 13:50:53,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:50:53,991 INFO L195 NwaCegarLoop]: trace histogram [49, 48, 26, 26, 26, 26, 26, 26, 25, 25, 23, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:50:54,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-07-14 13:50:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:54,192 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:50:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:50:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash -652694880, now seen corresponding path program 11 times [2022-07-14 13:50:54,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:50:54,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838701710] [2022-07-14 13:50:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:50:54,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:50:54,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:50:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703194324] [2022-07-14 13:50:54,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:50:54,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:50:54,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:50:54,203 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:50:54,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-07-14 13:50:54,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-14 13:50:54,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:50:54,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 13:50:54,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:50:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7040 backedges. 1567 proven. 47 refuted. 0 times theorem prover too weak. 5426 trivial. 0 not checked. [2022-07-14 13:50:54,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:50:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7040 backedges. 1567 proven. 75 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2022-07-14 13:50:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:50:57,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838701710] [2022-07-14 13:50:57,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:50:57,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703194324] [2022-07-14 13:50:57,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703194324] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:50:57,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:50:57,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 27 [2022-07-14 13:50:57,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525984961] [2022-07-14 13:50:57,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:50:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-14 13:50:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:50:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 13:50:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2022-07-14 13:50:57,641 INFO L87 Difference]: Start difference. First operand 6866 states and 9710 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 23 states have internal predecessors, (114), 15 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2022-07-14 13:51:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:51:01,299 INFO L93 Difference]: Finished difference Result 13151 states and 19300 transitions. [2022-07-14 13:51:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-14 13:51:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 23 states have internal predecessors, (114), 15 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 525 [2022-07-14 13:51:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:51:01,320 INFO L225 Difference]: With dead ends: 13151 [2022-07-14 13:51:01,321 INFO L226 Difference]: Without dead ends: 7342 [2022-07-14 13:51:01,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1025 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2022-07-14 13:51:01,335 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 102 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 13:51:01,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 841 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-14 13:51:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7342 states. [2022-07-14 13:51:01,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7342 to 7259. [2022-07-14 13:51:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7259 states, 5925 states have (on average 1.0769620253164558) internal successors, (6381), 5768 states have internal predecessors, (6381), 961 states have call successors, (961), 290 states have call predecessors, (961), 368 states have return successors, (2825), 1200 states have call predecessors, (2825), 959 states have call successors, (2825) [2022-07-14 13:51:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7259 states to 7259 states and 10167 transitions. [2022-07-14 13:51:01,784 INFO L78 Accepts]: Start accepts. Automaton has 7259 states and 10167 transitions. Word has length 525 [2022-07-14 13:51:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:51:01,784 INFO L495 AbstractCegarLoop]: Abstraction has 7259 states and 10167 transitions. [2022-07-14 13:51:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 23 states have internal predecessors, (114), 15 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2022-07-14 13:51:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand 7259 states and 10167 transitions. [2022-07-14 13:51:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2022-07-14 13:51:01,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:51:01,788 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 31, 31, 31, 31, 31, 31, 30, 30, 25, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:51:01,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-07-14 13:51:01,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:51:01,989 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:51:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:51:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -57085751, now seen corresponding path program 12 times [2022-07-14 13:51:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:51:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522431333] [2022-07-14 13:51:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:51:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:51:02,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:51:02,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583545962] [2022-07-14 13:51:02,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-14 13:51:02,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:51:02,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:51:02,001 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:51:02,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-07-14 13:51:02,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-14 13:51:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:51:02,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 13:51:02,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:51:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9456 backedges. 2791 proven. 2 refuted. 0 times theorem prover too weak. 6663 trivial. 0 not checked. [2022-07-14 13:51:02,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:51:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9456 backedges. 875 proven. 96 refuted. 0 times theorem prover too weak. 8485 trivial. 0 not checked. [2022-07-14 13:51:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:51:04,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522431333] [2022-07-14 13:51:04,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:51:04,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583545962] [2022-07-14 13:51:04,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583545962] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:51:04,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:51:04,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 13 [2022-07-14 13:51:04,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897783897] [2022-07-14 13:51:04,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:51:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 13:51:04,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:51:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 13:51:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-14 13:51:04,007 INFO L87 Difference]: Start difference. First operand 7259 states and 10167 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-14 13:51:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:51:05,064 INFO L93 Difference]: Finished difference Result 12957 states and 18220 transitions. [2022-07-14 13:51:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 13:51:05,068 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 603 [2022-07-14 13:51:05,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:51:05,093 INFO L225 Difference]: With dead ends: 12957 [2022-07-14 13:51:05,093 INFO L226 Difference]: Without dead ends: 6264 [2022-07-14 13:51:05,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1193 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-07-14 13:51:05,114 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 13:51:05,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 204 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 13:51:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2022-07-14 13:51:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 6106. [2022-07-14 13:51:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6106 states, 4992 states have (on average 1.0725160256410255) internal successors, (5354), 4861 states have internal predecessors, (5354), 784 states have call successors, (784), 250 states have call predecessors, (784), 325 states have return successors, (2301), 994 states have call predecessors, (2301), 782 states have call successors, (2301) [2022-07-14 13:51:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 8439 transitions. [2022-07-14 13:51:05,443 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 8439 transitions. Word has length 603 [2022-07-14 13:51:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:51:05,443 INFO L495 AbstractCegarLoop]: Abstraction has 6106 states and 8439 transitions. [2022-07-14 13:51:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 8 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-14 13:51:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 8439 transitions. [2022-07-14 13:51:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-07-14 13:51:05,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:51:05,447 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 25, 25, 24, 24, 24, 24, 24, 24, 24, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:51:05,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-07-14 13:51:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-07-14 13:51:05,647 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:51:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:51:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash -292548845, now seen corresponding path program 5 times [2022-07-14 13:51:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:51:05,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027934831] [2022-07-14 13:51:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:51:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:51:05,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:51:05,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788570465] [2022-07-14 13:51:05,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-14 13:51:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:51:05,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:51:05,660 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:51:05,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-07-14 13:51:05,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-14 13:51:05,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 13:51:05,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 13:51:05,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:51:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 1544 proven. 115 refuted. 0 times theorem prover too weak. 5485 trivial. 0 not checked. [2022-07-14 13:51:06,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 13:51:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 736 proven. 158 refuted. 0 times theorem prover too weak. 6250 trivial. 0 not checked. [2022-07-14 13:51:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 13:51:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027934831] [2022-07-14 13:51:08,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-14 13:51:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788570465] [2022-07-14 13:51:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788570465] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 13:51:08,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 13:51:08,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-07-14 13:51:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747047136] [2022-07-14 13:51:08,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 13:51:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 13:51:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 13:51:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 13:51:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-14 13:51:08,112 INFO L87 Difference]: Start difference. First operand 6106 states and 8439 transitions. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-14 13:51:09,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 13:51:09,546 INFO L93 Difference]: Finished difference Result 12584 states and 17579 transitions. [2022-07-14 13:51:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 13:51:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) Word has length 541 [2022-07-14 13:51:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 13:51:09,575 INFO L225 Difference]: With dead ends: 12584 [2022-07-14 13:51:09,575 INFO L226 Difference]: Without dead ends: 6798 [2022-07-14 13:51:09,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1068 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-07-14 13:51:09,594 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 42 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 13:51:09,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 251 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-14 13:51:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2022-07-14 13:51:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 6033. [2022-07-14 13:51:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6033 states, 4949 states have (on average 1.0486967064053343) internal successors, (5190), 4811 states have internal predecessors, (5190), 765 states have call successors, (765), 239 states have call predecessors, (765), 314 states have return successors, (1989), 982 states have call predecessors, (1989), 765 states have call successors, (1989) [2022-07-14 13:51:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6033 states to 6033 states and 7944 transitions. [2022-07-14 13:51:09,929 INFO L78 Accepts]: Start accepts. Automaton has 6033 states and 7944 transitions. Word has length 541 [2022-07-14 13:51:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 13:51:09,929 INFO L495 AbstractCegarLoop]: Abstraction has 6033 states and 7944 transitions. [2022-07-14 13:51:09,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 8 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2022-07-14 13:51:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6033 states and 7944 transitions. [2022-07-14 13:51:09,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2022-07-14 13:51:09,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 13:51:09,934 INFO L195 NwaCegarLoop]: trace histogram [59, 57, 34, 34, 34, 34, 33, 33, 32, 32, 25, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 13:51:09,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-07-14 13:51:10,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:51:10,134 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-14 13:51:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 13:51:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash 488551732, now seen corresponding path program 13 times [2022-07-14 13:51:10,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 13:51:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489416305] [2022-07-14 13:51:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 13:51:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 13:51:10,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-14 13:51:10,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208349612] [2022-07-14 13:51:10,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-14 13:51:10,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 13:51:10,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 13:51:10,148 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 13:51:10,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-07-14 13:51:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 13:51:10,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-14 13:51:10,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 13:51:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10495 backedges. 3589 proven. 33 refuted. 0 times theorem prover too weak. 6873 trivial. 0 not checked. [2022-07-14 13:51:11,327 INFO L328 TraceCheckSpWp]: Computing backward predicates...