./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 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/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-?-6c24879 [2022-07-13 02:05:46,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:05:46,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:05:46,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:05:46,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:05:46,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:05:46,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:05:46,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:05:46,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:05:46,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:05:46,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:05:46,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:05:46,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:05:46,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:05:46,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:05:46,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:05:46,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:05:46,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:05:46,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:05:46,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:05:46,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:05:46,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:05:46,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:05:46,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:05:46,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:05:46,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:05:46,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:05:46,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:05:46,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:05:46,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:05:46,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:05:46,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:05:46,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:05:46,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:05:46,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:05:46,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:05:46,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:05:46,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:05:46,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:05:46,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:05:46,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:05:46,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:05:46,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:05:46,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:05:46,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:05:46,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:05:46,227 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:05:46,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:05:46,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:05:46,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:05:46,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:05:46,229 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:05:46,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:05:46,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:05:46,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:05:46,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:05:46,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:05:46,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:05:46,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:05:46,231 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:05:46,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:05:46,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:05:46,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:05:46,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:05:46,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:05:46,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:05:46,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:05:46,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:05:46,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:05:46,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:05:46,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:05:46,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:05:46,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:05:46,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-07-13 02:05:46,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:05:46,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:05:46,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:05:46,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:05:46,466 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:05:46,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Binomial.c [2022-07-13 02:05:46,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cc41c0b/2348cd6a8c4e416e9b404a962115688a/FLAGc44a9f891 [2022-07-13 02:05:46,889 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:05:46,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Binomial.c [2022-07-13 02:05:46,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cc41c0b/2348cd6a8c4e416e9b404a962115688a/FLAGc44a9f891 [2022-07-13 02:05:46,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08cc41c0b/2348cd6a8c4e416e9b404a962115688a [2022-07-13 02:05:46,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:05:46,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:05:46,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:05:46,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:05:46,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:05:46,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:05:46" (1/1) ... [2022-07-13 02:05:46,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ce7288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:46, skipping insertion in model container [2022-07-13 02:05:46,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:05:46" (1/1) ... [2022-07-13 02:05:46,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:05:46,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:05:47,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:05:47,070 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:05:47,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:05:47,100 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:05:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47 WrapperNode [2022-07-13 02:05:47,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:05:47,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:05:47,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:05:47,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:05:47,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,132 INFO L137 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-07-13 02:05:47,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:05:47,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:05:47,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:05:47,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:05:47,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:05:47,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:05:47,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:05:47,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:05:47,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (1/1) ... [2022-07-13 02:05:47,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:05:47,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:47,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 02:05:47,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 02:05:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-07-13 02:05:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-07-13 02:05:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-07-13 02:05:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-07-13 02:05:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:05:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:05:47,290 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:05:47,291 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:05:47,431 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:05:47,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:05:47,439 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 02:05:47,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:05:47 BoogieIcfgContainer [2022-07-13 02:05:47,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:05:47,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:05:47,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:05:47,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:05:47,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:05:46" (1/3) ... [2022-07-13 02:05:47,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9a5a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:05:47, skipping insertion in model container [2022-07-13 02:05:47,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:05:47" (2/3) ... [2022-07-13 02:05:47,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9a5a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:05:47, skipping insertion in model container [2022-07-13 02:05:47,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:05:47" (3/3) ... [2022-07-13 02:05:47,457 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-07-13 02:05:47,468 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:05:47,469 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-07-13 02:05:47,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:05:47,518 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@4ec0200b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4be15b88 [2022-07-13 02:05:47,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-07-13 02:05:47,523 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) [2022-07-13 02:05:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:05:47,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:47,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:47,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2022-07-13 02:05:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:47,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610083082] [2022-07-13 02:05:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:47,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610083082] [2022-07-13 02:05:47,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610083082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:47,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:47,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:05:47,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385875876] [2022-07-13 02:05:47,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 02:05:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 02:05:47,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 02:05:47,685 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) [2022-07-13 02:05:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:47,713 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-07-13 02:05:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 02:05:47,715 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 [2022-07-13 02:05:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:47,720 INFO L225 Difference]: With dead ends: 114 [2022-07-13 02:05:47,720 INFO L226 Difference]: Without dead ends: 56 [2022-07-13 02:05:47,723 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 [2022-07-13 02:05:47,727 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 [2022-07-13 02:05:47,728 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] [2022-07-13 02:05:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-13 02:05:47,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-13 02:05:47,766 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) [2022-07-13 02:05:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-07-13 02:05:47,769 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2022-07-13 02:05:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:47,769 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-07-13 02:05:47,769 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) [2022-07-13 02:05:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-07-13 02:05:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:05:47,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:47,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:47,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:05:47,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:47,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2022-07-13 02:05:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:47,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359491699] [2022-07-13 02:05:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:47,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:47,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359491699] [2022-07-13 02:05:47,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359491699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:47,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:47,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:05:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419514152] [2022-07-13 02:05:47,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:47,814 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) [2022-07-13 02:05:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:47,877 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-07-13 02:05:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:05:47,878 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 [2022-07-13 02:05:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:47,879 INFO L225 Difference]: With dead ends: 109 [2022-07-13 02:05:47,879 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 02:05:47,880 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 [2022-07-13 02:05:47,881 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 [2022-07-13 02:05:47,881 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] [2022-07-13 02:05:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 02:05:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-13 02:05:47,889 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) [2022-07-13 02:05:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-07-13 02:05:47,890 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2022-07-13 02:05:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:47,891 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-07-13 02:05:47,891 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) [2022-07-13 02:05:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-07-13 02:05:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 02:05:47,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:47,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:05:47,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2022-07-13 02:05:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638032770] [2022-07-13 02:05:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:47,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638032770] [2022-07-13 02:05:47,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638032770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:47,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:47,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:05:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103015908] [2022-07-13 02:05:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:05:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:05:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:05:47,995 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) [2022-07-13 02:05:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:48,189 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2022-07-13 02:05:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:05:48,189 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 [2022-07-13 02:05:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:48,192 INFO L225 Difference]: With dead ends: 155 [2022-07-13 02:05:48,193 INFO L226 Difference]: Without dead ends: 102 [2022-07-13 02:05:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:05:48,195 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 [2022-07-13 02:05:48,196 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] [2022-07-13 02:05:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-13 02:05:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-07-13 02:05:48,212 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) [2022-07-13 02:05:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-07-13 02:05:48,214 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2022-07-13 02:05:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:48,215 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-07-13 02:05:48,215 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) [2022-07-13 02:05:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-07-13 02:05:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 02:05:48,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:48,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:05:48,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:48,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2022-07-13 02:05:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:48,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949001064] [2022-07-13 02:05:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:48,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:48,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949001064] [2022-07-13 02:05:48,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949001064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:48,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:48,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:05:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714547112] [2022-07-13 02:05:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:48,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:48,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:48,248 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) [2022-07-13 02:05:48,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:48,294 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-07-13 02:05:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:05:48,294 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 [2022-07-13 02:05:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:48,296 INFO L225 Difference]: With dead ends: 186 [2022-07-13 02:05:48,296 INFO L226 Difference]: Without dead ends: 105 [2022-07-13 02:05:48,297 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 [2022-07-13 02:05:48,298 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:48,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:05:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-07-13 02:05:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-07-13 02:05:48,310 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) [2022-07-13 02:05:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-07-13 02:05:48,312 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2022-07-13 02:05:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:48,312 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-07-13 02:05:48,312 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) [2022-07-13 02:05:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-07-13 02:05:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:05:48,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:48,313 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:05:48,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2022-07-13 02:05:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514987405] [2022-07-13 02:05:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 02:05:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:05:48,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:48,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514987405] [2022-07-13 02:05:48,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514987405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:48,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:48,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:05:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080042375] [2022-07-13 02:05:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:48,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:05:48,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:05:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:05:48,421 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) [2022-07-13 02:05:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:48,558 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-07-13 02:05:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:05:48,559 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 [2022-07-13 02:05:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:48,561 INFO L225 Difference]: With dead ends: 226 [2022-07-13 02:05:48,564 INFO L226 Difference]: Without dead ends: 145 [2022-07-13 02:05:48,565 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 [2022-07-13 02:05:48,569 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 [2022-07-13 02:05:48,573 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] [2022-07-13 02:05:48,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-13 02:05:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-07-13 02:05:48,596 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) [2022-07-13 02:05:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2022-07-13 02:05:48,600 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2022-07-13 02:05:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2022-07-13 02:05:48,601 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) [2022-07-13 02:05:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2022-07-13 02:05:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 02:05:48,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:48,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:05:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:05:48,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2022-07-13 02:05:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766400872] [2022-07-13 02:05:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 02:05:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 02:05:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:05:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:48,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766400872] [2022-07-13 02:05:48,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766400872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:48,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:48,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:05:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648483096] [2022-07-13 02:05:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:05:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:48,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:05:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:05:48,681 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) [2022-07-13 02:05:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:48,769 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2022-07-13 02:05:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:05:48,770 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 [2022-07-13 02:05:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:48,771 INFO L225 Difference]: With dead ends: 149 [2022-07-13 02:05:48,771 INFO L226 Difference]: Without dead ends: 148 [2022-07-13 02:05:48,772 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 [2022-07-13 02:05:48,782 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 [2022-07-13 02:05:48,782 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] [2022-07-13 02:05:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-07-13 02:05:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2022-07-13 02:05:48,802 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) [2022-07-13 02:05:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2022-07-13 02:05:48,804 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2022-07-13 02:05:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:48,804 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2022-07-13 02:05:48,804 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) [2022-07-13 02:05:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2022-07-13 02:05:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 02:05:48,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:48,805 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] [2022-07-13 02:05:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:05:48,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2022-07-13 02:05:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:48,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019365246] [2022-07-13 02:05:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:48,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 02:05:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 02:05:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:05:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019365246] [2022-07-13 02:05:48,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019365246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:48,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:48,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:05:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854608431] [2022-07-13 02:05:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:48,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:05:48,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:05:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:05:48,884 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) [2022-07-13 02:05:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:48,965 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2022-07-13 02:05:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:05:48,966 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 [2022-07-13 02:05:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:48,970 INFO L225 Difference]: With dead ends: 163 [2022-07-13 02:05:48,970 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 02:05:48,971 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 [2022-07-13 02:05:48,972 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 [2022-07-13 02:05:48,972 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] [2022-07-13 02:05:48,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 02:05:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2022-07-13 02:05:48,995 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) [2022-07-13 02:05:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2022-07-13 02:05:48,997 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2022-07-13 02:05:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:48,997 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2022-07-13 02:05:48,997 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) [2022-07-13 02:05:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2022-07-13 02:05:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 02:05:48,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:48,998 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] [2022-07-13 02:05:48,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 02:05:48,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2022-07-13 02:05:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:49,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976554608] [2022-07-13 02:05:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 02:05:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 02:05:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:05:49,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:49,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976554608] [2022-07-13 02:05:49,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976554608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:49,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:49,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 02:05:49,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586223219] [2022-07-13 02:05:49,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:49,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:05:49,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:49,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:05:49,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:05:49,074 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) [2022-07-13 02:05:49,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:49,205 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2022-07-13 02:05:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:05:49,208 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 [2022-07-13 02:05:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:49,211 INFO L225 Difference]: With dead ends: 292 [2022-07-13 02:05:49,211 INFO L226 Difference]: Without dead ends: 168 [2022-07-13 02:05:49,212 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 [2022-07-13 02:05:49,213 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 [2022-07-13 02:05:49,213 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] [2022-07-13 02:05:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-13 02:05:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2022-07-13 02:05:49,250 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) [2022-07-13 02:05:49,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2022-07-13 02:05:49,252 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2022-07-13 02:05:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:49,252 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2022-07-13 02:05:49,253 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) [2022-07-13 02:05:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2022-07-13 02:05:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 02:05:49,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:49,254 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] [2022-07-13 02:05:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 02:05:49,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2022-07-13 02:05:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:49,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922454260] [2022-07-13 02:05:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:49,266 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:49,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257954103] [2022-07-13 02:05:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:49,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:49,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:49,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:49,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:05:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:49,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:05:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 02:05:49,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:49,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:49,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922454260] [2022-07-13 02:05:49,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:49,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257954103] [2022-07-13 02:05:49,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257954103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:49,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:49,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:05:49,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586316358] [2022-07-13 02:05:49,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:49,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:05:49,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:05:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:05:49,440 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) [2022-07-13 02:05:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:49,522 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2022-07-13 02:05:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:05:49,523 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 [2022-07-13 02:05:49,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:49,524 INFO L225 Difference]: With dead ends: 203 [2022-07-13 02:05:49,524 INFO L226 Difference]: Without dead ends: 201 [2022-07-13 02:05:49,525 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 [2022-07-13 02:05:49,525 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-13 02:05:49,526 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] [2022-07-13 02:05:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-13 02:05:49,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-07-13 02:05:49,534 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) [2022-07-13 02:05:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2022-07-13 02:05:49,536 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2022-07-13 02:05:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:49,536 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2022-07-13 02:05:49,536 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) [2022-07-13 02:05:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2022-07-13 02:05:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-13 02:05:49,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:49,537 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] [2022-07-13 02:05:49,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:49,763 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 [2022-07-13 02:05:49,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2022-07-13 02:05:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:49,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313483766] [2022-07-13 02:05:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:49,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:49,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116241544] [2022-07-13 02:05:49,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:49,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:49,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:49,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:49,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:05:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:49,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:05:49,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 02:05:49,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:52,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313483766] [2022-07-13 02:05:52,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116241544] [2022-07-13 02:05:52,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116241544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:05:52,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:05:52,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-07-13 02:05:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756350402] [2022-07-13 02:05:52,426 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:52,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:05:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:05:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:05:52,427 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) [2022-07-13 02:05:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:52,517 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2022-07-13 02:05:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:05:52,518 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 [2022-07-13 02:05:52,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:52,520 INFO L225 Difference]: With dead ends: 257 [2022-07-13 02:05:52,520 INFO L226 Difference]: Without dead ends: 255 [2022-07-13 02:05:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:05:52,521 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 [2022-07-13 02:05:52,521 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] [2022-07-13 02:05:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-13 02:05:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-07-13 02:05:52,535 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) [2022-07-13 02:05:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-07-13 02:05:52,536 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2022-07-13 02:05:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:52,537 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-07-13 02:05:52,537 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) [2022-07-13 02:05:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-07-13 02:05:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 02:05:52,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:52,538 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] [2022-07-13 02:05:52,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:52,751 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 [2022-07-13 02:05:52,752 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2022-07-13 02:05:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461715631] [2022-07-13 02:05:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:52,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:52,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48395214] [2022-07-13 02:05:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:52,765 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:52,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:05:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:05:52,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:52,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461715631] [2022-07-13 02:05:52,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:52,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48395214] [2022-07-13 02:05:52,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48395214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:52,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:05:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003266808] [2022-07-13 02:05:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:52,824 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) [2022-07-13 02:05:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:52,858 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2022-07-13 02:05:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:05:52,859 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 [2022-07-13 02:05:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:52,864 INFO L225 Difference]: With dead ends: 217 [2022-07-13 02:05:52,864 INFO L226 Difference]: Without dead ends: 216 [2022-07-13 02:05:52,864 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 [2022-07-13 02:05:52,865 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 [2022-07-13 02:05:52,865 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] [2022-07-13 02:05:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-13 02:05:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2022-07-13 02:05:52,878 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) [2022-07-13 02:05:52,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-13 02:05:52,881 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2022-07-13 02:05:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:52,881 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-13 02:05:52,881 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) [2022-07-13 02:05:52,881 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-13 02:05:52,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 02:05:52,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:52,885 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] [2022-07-13 02:05:52,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:53,108 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 [2022-07-13 02:05:53,108 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2022-07-13 02:05:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:53,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862679086] [2022-07-13 02:05:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:53,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:53,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163868079] [2022-07-13 02:05:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:53,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:53,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:53,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:05:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:53,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:05:53,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:53,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862679086] [2022-07-13 02:05:53,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163868079] [2022-07-13 02:05:53,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163868079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:53,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:53,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:05:53,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397700450] [2022-07-13 02:05:53,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:53,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:53,189 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) [2022-07-13 02:05:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:53,213 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2022-07-13 02:05:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:05:53,214 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 [2022-07-13 02:05:53,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:53,215 INFO L225 Difference]: With dead ends: 213 [2022-07-13 02:05:53,215 INFO L226 Difference]: Without dead ends: 212 [2022-07-13 02:05:53,215 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 [2022-07-13 02:05:53,216 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 [2022-07-13 02:05:53,216 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] [2022-07-13 02:05:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-13 02:05:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-07-13 02:05:53,225 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) [2022-07-13 02:05:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2022-07-13 02:05:53,227 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2022-07-13 02:05:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:53,227 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2022-07-13 02:05:53,227 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) [2022-07-13 02:05:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2022-07-13 02:05:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 02:05:53,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:53,228 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] [2022-07-13 02:05:53,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:53,455 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 [2022-07-13 02:05:53,455 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2022-07-13 02:05:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:53,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753289954] [2022-07-13 02:05:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:53,464 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:53,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378083253] [2022-07-13 02:05:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:53,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:53,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:05:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:53,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:05:53,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 02:05:53,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753289954] [2022-07-13 02:05:53,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378083253] [2022-07-13 02:05:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378083253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:53,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:53,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:05:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583950025] [2022-07-13 02:05:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:53,535 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) [2022-07-13 02:05:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:53,569 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2022-07-13 02:05:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:05:53,571 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 [2022-07-13 02:05:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:53,573 INFO L225 Difference]: With dead ends: 218 [2022-07-13 02:05:53,573 INFO L226 Difference]: Without dead ends: 217 [2022-07-13 02:05:53,573 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 [2022-07-13 02:05:53,574 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 [2022-07-13 02:05:53,574 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] [2022-07-13 02:05:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-13 02:05:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2022-07-13 02:05:53,583 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) [2022-07-13 02:05:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2022-07-13 02:05:53,585 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2022-07-13 02:05:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:53,585 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2022-07-13 02:05:53,585 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) [2022-07-13 02:05:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2022-07-13 02:05:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 02:05:53,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:53,590 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] [2022-07-13 02:05:53,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:53,807 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 [2022-07-13 02:05:53,808 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:53,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2022-07-13 02:05:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653650072] [2022-07-13 02:05:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:53,816 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:53,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143460033] [2022-07-13 02:05:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:53,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:53,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:53,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:53,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:05:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:53,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:05:53,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 02:05:53,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:53,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653650072] [2022-07-13 02:05:53,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:53,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143460033] [2022-07-13 02:05:53,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143460033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:53,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:53,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:05:53,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675694335] [2022-07-13 02:05:53,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:53,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:05:53,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:53,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:05:53,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:05:53,902 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) [2022-07-13 02:05:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:53,930 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2022-07-13 02:05:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:05:53,931 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 [2022-07-13 02:05:53,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:53,932 INFO L225 Difference]: With dead ends: 214 [2022-07-13 02:05:53,932 INFO L226 Difference]: Without dead ends: 213 [2022-07-13 02:05:53,933 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 [2022-07-13 02:05:53,933 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 [2022-07-13 02:05:53,934 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] [2022-07-13 02:05:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-13 02:05:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-13 02:05:53,943 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) [2022-07-13 02:05:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2022-07-13 02:05:53,944 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2022-07-13 02:05:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:53,945 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2022-07-13 02:05:53,945 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) [2022-07-13 02:05:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2022-07-13 02:05:53,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 02:05:53,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:53,946 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] [2022-07-13 02:05:53,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:54,168 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 [2022-07-13 02:05:54,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:54,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2022-07-13 02:05:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:54,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594773143] [2022-07-13 02:05:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:54,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:54,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795677639] [2022-07-13 02:05:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:54,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:54,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:54,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:05:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:54,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:05:54,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:54,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:54,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594773143] [2022-07-13 02:05:54,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:54,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795677639] [2022-07-13 02:05:54,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795677639] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:05:54,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:05:54,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-13 02:05:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863812651] [2022-07-13 02:05:54,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:54,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:05:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:05:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:05:54,417 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) [2022-07-13 02:05:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:54,817 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2022-07-13 02:05:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:05:54,818 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 [2022-07-13 02:05:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:54,820 INFO L225 Difference]: With dead ends: 316 [2022-07-13 02:05:54,820 INFO L226 Difference]: Without dead ends: 315 [2022-07-13 02:05:54,821 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 [2022-07-13 02:05:54,822 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:54,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 589 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:05:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-13 02:05:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2022-07-13 02:05:54,835 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) [2022-07-13 02:05:54,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-07-13 02:05:54,837 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2022-07-13 02:05:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:54,837 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-07-13 02:05:54,838 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) [2022-07-13 02:05:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-07-13 02:05:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 02:05:54,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:54,839 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] [2022-07-13 02:05:54,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:55,043 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 [2022-07-13 02:05:55,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2022-07-13 02:05:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:55,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783970286] [2022-07-13 02:05:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:55,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:55,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015642398] [2022-07-13 02:05:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:55,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:55,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:55,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:55,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:05:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:55,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 02:05:55,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 02:05:55,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:55,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783970286] [2022-07-13 02:05:55,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:55,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015642398] [2022-07-13 02:05:55,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015642398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:55,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:55,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:05:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592473045] [2022-07-13 02:05:55,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:55,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:05:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:55,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:05:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:05:55,105 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) [2022-07-13 02:05:55,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:55,124 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-07-13 02:05:55,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:05:55,125 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 [2022-07-13 02:05:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:55,127 INFO L225 Difference]: With dead ends: 278 [2022-07-13 02:05:55,127 INFO L226 Difference]: Without dead ends: 277 [2022-07-13 02:05:55,127 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 [2022-07-13 02:05:55,128 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 [2022-07-13 02:05:55,128 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] [2022-07-13 02:05:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-07-13 02:05:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-07-13 02:05:55,139 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) [2022-07-13 02:05:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2022-07-13 02:05:55,141 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2022-07-13 02:05:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:55,142 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2022-07-13 02:05:55,142 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) [2022-07-13 02:05:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2022-07-13 02:05:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 02:05:55,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:55,143 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] [2022-07-13 02:05:55,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:55,365 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 [2022-07-13 02:05:55,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:55,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:55,366 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2022-07-13 02:05:55,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:55,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749532654] [2022-07-13 02:05:55,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:55,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:55,376 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503511629] [2022-07-13 02:05:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:55,378 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:55,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:05:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:55,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:05:55,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 02:05:55,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749532654] [2022-07-13 02:05:55,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503511629] [2022-07-13 02:05:55,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503511629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:55,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:55,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:05:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190748959] [2022-07-13 02:05:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:55,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:05:55,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:05:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:05:55,489 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) [2022-07-13 02:05:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:55,580 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-07-13 02:05:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:05:55,580 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 [2022-07-13 02:05:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:55,581 INFO L225 Difference]: With dead ends: 496 [2022-07-13 02:05:55,582 INFO L226 Difference]: Without dead ends: 253 [2022-07-13 02:05:55,583 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 [2022-07-13 02:05:55,583 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:05:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-13 02:05:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-07-13 02:05:55,592 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) [2022-07-13 02:05:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-07-13 02:05:55,594 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2022-07-13 02:05:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:55,594 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-07-13 02:05:55,594 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) [2022-07-13 02:05:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-07-13 02:05:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 02:05:55,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:55,595 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] [2022-07-13 02:05:55,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:55,827 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 [2022-07-13 02:05:55,827 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2022-07-13 02:05:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:55,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916104010] [2022-07-13 02:05:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:55,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:55,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:55,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989480545] [2022-07-13 02:05:55,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:05:55,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:55,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:55,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:55,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:05:55,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:05:55,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:05:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:05:55,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 02:05:55,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916104010] [2022-07-13 02:05:55,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989480545] [2022-07-13 02:05:55,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989480545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:55,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:55,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 02:05:55,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861037141] [2022-07-13 02:05:55,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:55,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:05:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:55,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:05:55,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:05:55,948 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) [2022-07-13 02:05:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:56,109 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2022-07-13 02:05:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:05:56,110 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 [2022-07-13 02:05:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:56,111 INFO L225 Difference]: With dead ends: 516 [2022-07-13 02:05:56,111 INFO L226 Difference]: Without dead ends: 303 [2022-07-13 02:05:56,112 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 [2022-07-13 02:05:56,113 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 [2022-07-13 02:05:56,113 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] [2022-07-13 02:05:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-13 02:05:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2022-07-13 02:05:56,126 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) [2022-07-13 02:05:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2022-07-13 02:05:56,127 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2022-07-13 02:05:56,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:56,128 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2022-07-13 02:05:56,128 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) [2022-07-13 02:05:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2022-07-13 02:05:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 02:05:56,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:56,129 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] [2022-07-13 02:05:56,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:56,342 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 [2022-07-13 02:05:56,342 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2022-07-13 02:05:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:56,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508501961] [2022-07-13 02:05:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:56,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:56,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:56,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428110665] [2022-07-13 02:05:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:56,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:56,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:56,351 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:56,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:05:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:56,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:05:56,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:56,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:56,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508501961] [2022-07-13 02:05:56,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:56,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428110665] [2022-07-13 02:05:56,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428110665] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:05:56,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:05:56,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-13 02:05:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749640344] [2022-07-13 02:05:56,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:05:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:05:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:05:56,584 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) [2022-07-13 02:05:56,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:56,808 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2022-07-13 02:05:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 02:05:56,808 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 [2022-07-13 02:05:56,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:56,810 INFO L225 Difference]: With dead ends: 533 [2022-07-13 02:05:56,810 INFO L226 Difference]: Without dead ends: 323 [2022-07-13 02:05:56,811 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 [2022-07-13 02:05:56,812 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 [2022-07-13 02:05:56,812 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] [2022-07-13 02:05:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-13 02:05:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-07-13 02:05:56,823 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) [2022-07-13 02:05:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-07-13 02:05:56,825 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2022-07-13 02:05:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:56,825 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-07-13 02:05:56,826 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) [2022-07-13 02:05:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-07-13 02:05:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 02:05:56,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:56,826 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] [2022-07-13 02:05:56,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:57,049 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 [2022-07-13 02:05:57,049 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2022-07-13 02:05:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:57,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549311042] [2022-07-13 02:05:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:57,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:57,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:57,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631858394] [2022-07-13 02:05:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:57,059 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:57,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:05:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:57,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:05:57,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 02:05:57,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 02:05:57,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549311042] [2022-07-13 02:05:57,937 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631858394] [2022-07-13 02:05:57,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631858394] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:05:57,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:05:57,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-07-13 02:05:57,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599504648] [2022-07-13 02:05:57,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:57,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:05:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:05:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:05:57,939 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) [2022-07-13 02:05:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:58,949 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2022-07-13 02:05:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 02:05:58,949 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 [2022-07-13 02:05:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:58,951 INFO L225 Difference]: With dead ends: 606 [2022-07-13 02:05:58,951 INFO L226 Difference]: Without dead ends: 392 [2022-07-13 02:05:58,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 02:05:58,953 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:58,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 774 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 580 Invalid, 0 Unknown, 70 Unchecked, 0.4s Time] [2022-07-13 02:05:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-13 02:05:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2022-07-13 02:05:58,966 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) [2022-07-13 02:05:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2022-07-13 02:05:58,968 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2022-07-13 02:05:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:58,968 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2022-07-13 02:05:58,968 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) [2022-07-13 02:05:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2022-07-13 02:05:58,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 02:05:58,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:58,969 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] [2022-07-13 02:05:58,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:59,187 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 [2022-07-13 02:05:59,187 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:59,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:59,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2022-07-13 02:05:59,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:59,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585673145] [2022-07-13 02:05:59,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:59,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:59,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:59,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159212388] [2022-07-13 02:05:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:59,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:59,202 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:59,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:05:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:59,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:05:59,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:05:59,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 02:05:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:59,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585673145] [2022-07-13 02:05:59,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159212388] [2022-07-13 02:05:59,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159212388] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:05:59,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:05:59,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-07-13 02:05:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655987486] [2022-07-13 02:05:59,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:59,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:05:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:05:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:05:59,374 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) [2022-07-13 02:05:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:59,594 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2022-07-13 02:05:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:05:59,595 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 [2022-07-13 02:05:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:59,597 INFO L225 Difference]: With dead ends: 706 [2022-07-13 02:05:59,597 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 02:05:59,598 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 [2022-07-13 02:05:59,599 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:59,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 459 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:05:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 02:05:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2022-07-13 02:05:59,610 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) [2022-07-13 02:05:59,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2022-07-13 02:05:59,618 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2022-07-13 02:05:59,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:59,618 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2022-07-13 02:05:59,618 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) [2022-07-13 02:05:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2022-07-13 02:05:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 02:05:59,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:59,623 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] [2022-07-13 02:05:59,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:59,843 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 [2022-07-13 02:05:59,843 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:05:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2022-07-13 02:05:59,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:59,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142013319] [2022-07-13 02:05:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:59,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:59,850 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:05:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697422085] [2022-07-13 02:05:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:59,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:59,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:59,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:05:59,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:05:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:05:59,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 02:05:59,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:05:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:59,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142013319] [2022-07-13 02:05:59,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:05:59,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697422085] [2022-07-13 02:05:59,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697422085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:05:59,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:05:59,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:05:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129738862] [2022-07-13 02:05:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:05:59,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:05:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:05:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:05:59,934 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) [2022-07-13 02:06:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,023 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2022-07-13 02:06:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:06:00,024 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 [2022-07-13 02:06:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,026 INFO L225 Difference]: With dead ends: 683 [2022-07-13 02:06:00,026 INFO L226 Difference]: Without dead ends: 369 [2022-07-13 02:06:00,028 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 [2022-07-13 02:06:00,029 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 [2022-07-13 02:06:00,029 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] [2022-07-13 02:06:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-13 02:06:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2022-07-13 02:06:00,040 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) [2022-07-13 02:06:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2022-07-13 02:06:00,042 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2022-07-13 02:06:00,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,043 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2022-07-13 02:06:00,043 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) [2022-07-13 02:06:00,043 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2022-07-13 02:06:00,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 02:06:00,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,044 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] [2022-07-13 02:06:00,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:00,267 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 [2022-07-13 02:06:00,267 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2022-07-13 02:06:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621792757] [2022-07-13 02:06:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:00,274 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208420889] [2022-07-13 02:06:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:00,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:00,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:00,279 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:00,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:06:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:00,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:06:00,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 02:06:00,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 02:06:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621792757] [2022-07-13 02:06:00,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:00,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208420889] [2022-07-13 02:06:00,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208420889] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:00,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:00,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-13 02:06:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375138444] [2022-07-13 02:06:00,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:00,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:06:00,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:06:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:06:00,517 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) [2022-07-13 02:06:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:00,802 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2022-07-13 02:06:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:06:00,803 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 [2022-07-13 02:06:00,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:00,805 INFO L225 Difference]: With dead ends: 442 [2022-07-13 02:06:00,805 INFO L226 Difference]: Without dead ends: 441 [2022-07-13 02:06:00,805 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 [2022-07-13 02:06:00,805 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 [2022-07-13 02:06:00,806 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] [2022-07-13 02:06:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-13 02:06:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2022-07-13 02:06:00,821 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) [2022-07-13 02:06:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2022-07-13 02:06:00,823 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2022-07-13 02:06:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:00,823 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2022-07-13 02:06:00,823 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) [2022-07-13 02:06:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2022-07-13 02:06:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 02:06:00,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:00,824 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] [2022-07-13 02:06:00,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:01,045 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 [2022-07-13 02:06:01,046 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:01,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2022-07-13 02:06:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:01,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606409069] [2022-07-13 02:06:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:01,055 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:01,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844543396] [2022-07-13 02:06:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:01,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:01,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:01,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:06:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:01,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:06:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 02:06:01,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606409069] [2022-07-13 02:06:01,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:01,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844543396] [2022-07-13 02:06:01,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844543396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:01,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:01,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 02:06:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678309558] [2022-07-13 02:06:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:06:01,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:06:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:06:01,190 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) [2022-07-13 02:06:01,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:01,310 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2022-07-13 02:06:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:06:01,310 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 [2022-07-13 02:06:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:01,312 INFO L225 Difference]: With dead ends: 425 [2022-07-13 02:06:01,312 INFO L226 Difference]: Without dead ends: 424 [2022-07-13 02:06:01,313 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 [2022-07-13 02:06:01,314 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 [2022-07-13 02:06:01,314 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] [2022-07-13 02:06:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-13 02:06:01,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-07-13 02:06:01,334 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) [2022-07-13 02:06:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2022-07-13 02:06:01,336 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2022-07-13 02:06:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:01,337 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2022-07-13 02:06:01,337 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) [2022-07-13 02:06:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2022-07-13 02:06:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 02:06:01,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:01,338 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] [2022-07-13 02:06:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:01,551 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 [2022-07-13 02:06:01,551 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:01,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2022-07-13 02:06:01,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:01,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818541422] [2022-07-13 02:06:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:01,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:01,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624682193] [2022-07-13 02:06:01,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:01,562 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:01,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 02:06:01,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:01,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:01,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:06:01,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 02:06:01,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 02:06:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818541422] [2022-07-13 02:06:01,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624682193] [2022-07-13 02:06:01,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624682193] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:01,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:01,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-13 02:06:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664920945] [2022-07-13 02:06:01,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:01,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:06:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:06:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:01,836 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) [2022-07-13 02:06:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:02,228 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2022-07-13 02:06:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 02:06:02,229 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 [2022-07-13 02:06:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:02,231 INFO L225 Difference]: With dead ends: 478 [2022-07-13 02:06:02,231 INFO L226 Difference]: Without dead ends: 477 [2022-07-13 02:06:02,232 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 [2022-07-13 02:06:02,232 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:02,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:06:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-13 02:06:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2022-07-13 02:06:02,249 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) [2022-07-13 02:06:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2022-07-13 02:06:02,251 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2022-07-13 02:06:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:02,252 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2022-07-13 02:06:02,252 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) [2022-07-13 02:06:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2022-07-13 02:06:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 02:06:02,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:02,253 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] [2022-07-13 02:06:02,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:02,471 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 [2022-07-13 02:06:02,472 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:02,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:02,472 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2022-07-13 02:06:02,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:02,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833400374] [2022-07-13 02:06:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:02,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:02,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598463748] [2022-07-13 02:06:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:02,481 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:02,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 02:06:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:02,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:06:02,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 02:06:02,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833400374] [2022-07-13 02:06:02,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598463748] [2022-07-13 02:06:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598463748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:02,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 02:06:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068195742] [2022-07-13 02:06:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:06:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:06:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:06:02,635 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) [2022-07-13 02:06:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:02,836 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2022-07-13 02:06:02,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:06:02,836 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 [2022-07-13 02:06:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:02,839 INFO L225 Difference]: With dead ends: 875 [2022-07-13 02:06:02,839 INFO L226 Difference]: Without dead ends: 466 [2022-07-13 02:06:02,841 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 [2022-07-13 02:06:02,841 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:02,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 271 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:06:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-07-13 02:06:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-07-13 02:06:02,858 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) [2022-07-13 02:06:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2022-07-13 02:06:02,861 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2022-07-13 02:06:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:02,861 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2022-07-13 02:06:02,861 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) [2022-07-13 02:06:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2022-07-13 02:06:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 02:06:02,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:02,862 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] [2022-07-13 02:06:02,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:03,085 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 [2022-07-13 02:06:03,085 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2022-07-13 02:06:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:03,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442548121] [2022-07-13 02:06:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:03,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:03,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908875385] [2022-07-13 02:06:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:03,093 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:03,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 02:06:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:03,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:06:03,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 02:06:03,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 02:06:04,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442548121] [2022-07-13 02:06:04,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908875385] [2022-07-13 02:06:04,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908875385] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:04,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:04,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-07-13 02:06:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144596590] [2022-07-13 02:06:04,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 02:06:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 02:06:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:06:04,010 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) [2022-07-13 02:06:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:04,977 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2022-07-13 02:06:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 02:06:04,978 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 [2022-07-13 02:06:04,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:04,980 INFO L225 Difference]: With dead ends: 538 [2022-07-13 02:06:04,980 INFO L226 Difference]: Without dead ends: 537 [2022-07-13 02:06:04,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 02:06:04,981 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:04,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 626 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 602 Invalid, 0 Unknown, 76 Unchecked, 0.4s Time] [2022-07-13 02:06:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-07-13 02:06:05,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 506. [2022-07-13 02:06:05,005 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) [2022-07-13 02:06:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 673 transitions. [2022-07-13 02:06:05,007 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 673 transitions. Word has length 79 [2022-07-13 02:06:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:05,008 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 673 transitions. [2022-07-13 02:06:05,008 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) [2022-07-13 02:06:05,008 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 673 transitions. [2022-07-13 02:06:05,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-13 02:06:05,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:05,009 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] [2022-07-13 02:06:05,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:05,224 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 [2022-07-13 02:06:05,225 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2022-07-13 02:06:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516698517] [2022-07-13 02:06:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:05,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342128319] [2022-07-13 02:06:05,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:05,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:05,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:05,234 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:06:05,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 02:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:06:05,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 02:06:05,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:05,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:05,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516698517] [2022-07-13 02:06:05,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:05,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342128319] [2022-07-13 02:06:05,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342128319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:05,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:05,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 02:06:05,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703943850] [2022-07-13 02:06:05,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:05,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:06:05,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:05,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:06:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:06:05,312 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) [2022-07-13 02:06:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:05,357 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2022-07-13 02:06:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:06:05,358 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 [2022-07-13 02:06:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:05,360 INFO L225 Difference]: With dead ends: 508 [2022-07-13 02:06:05,360 INFO L226 Difference]: Without dead ends: 507 [2022-07-13 02:06:05,360 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 [2022-07-13 02:06:05,361 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 [2022-07-13 02:06:05,361 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] [2022-07-13 02:06:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-13 02:06:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2022-07-13 02:06:05,377 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) [2022-07-13 02:06:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2022-07-13 02:06:05,379 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 80 [2022-07-13 02:06:05,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:05,379 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2022-07-13 02:06:05,379 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) [2022-07-13 02:06:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2022-07-13 02:06:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 02:06:05,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:05,380 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] [2022-07-13 02:06:05,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:05,593 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 [2022-07-13 02:06:05,594 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2022-07-13 02:06:05,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232131181] [2022-07-13 02:06:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:05,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531358275] [2022-07-13 02:06:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:05,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:05,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:05,602 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) [2022-07-13 02:06:05,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 02:06:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:06:05,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 02:06:05,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:05,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:05,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232131181] [2022-07-13 02:06:05,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:05,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531358275] [2022-07-13 02:06:05,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531358275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:05,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:05,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-07-13 02:06:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593699955] [2022-07-13 02:06:05,791 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:06:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:06:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:06:05,792 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) [2022-07-13 02:06:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:05,854 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2022-07-13 02:06:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:06:05,855 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 [2022-07-13 02:06:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:05,857 INFO L225 Difference]: With dead ends: 543 [2022-07-13 02:06:05,857 INFO L226 Difference]: Without dead ends: 542 [2022-07-13 02:06:05,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:06:05,858 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:05,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 192 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:06:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-13 02:06:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2022-07-13 02:06:05,881 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) [2022-07-13 02:06:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2022-07-13 02:06:05,883 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 84 [2022-07-13 02:06:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:05,885 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2022-07-13 02:06:05,885 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) [2022-07-13 02:06:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2022-07-13 02:06:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-13 02:06:05,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:05,886 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] [2022-07-13 02:06:05,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-13 02:06:06,107 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 [2022-07-13 02:06:06,107 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2022-07-13 02:06:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:06,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547574584] [2022-07-13 02:06:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:06,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:06,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626228898] [2022-07-13 02:06:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:06,116 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) [2022-07-13 02:06:06,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 02:06:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:06,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:06:06,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:06,295 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 02:06:06,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:06,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:06,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547574584] [2022-07-13 02:06:06,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:06,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626228898] [2022-07-13 02:06:06,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626228898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:06,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:06,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 02:06:06,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830360073] [2022-07-13 02:06:06,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:06,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:06:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:06:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:06:06,297 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) [2022-07-13 02:06:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:06,369 INFO L93 Difference]: Finished difference Result 519 states and 675 transitions. [2022-07-13 02:06:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:06:06,369 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 [2022-07-13 02:06:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:06,372 INFO L225 Difference]: With dead ends: 519 [2022-07-13 02:06:06,372 INFO L226 Difference]: Without dead ends: 518 [2022-07-13 02:06:06,372 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 [2022-07-13 02:06:06,373 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 [2022-07-13 02:06:06,373 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] [2022-07-13 02:06:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-13 02:06:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 495. [2022-07-13 02:06:06,388 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) [2022-07-13 02:06:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 642 transitions. [2022-07-13 02:06:06,391 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 642 transitions. Word has length 85 [2022-07-13 02:06:06,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:06,391 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 642 transitions. [2022-07-13 02:06:06,391 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) [2022-07-13 02:06:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 642 transitions. [2022-07-13 02:06:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-13 02:06:06,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:06,392 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] [2022-07-13 02:06:06,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:06,615 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 [2022-07-13 02:06:06,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2022-07-13 02:06:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575894878] [2022-07-13 02:06:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:06,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:06,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634656749] [2022-07-13 02:06:06,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:06,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:06,628 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) [2022-07-13 02:06:06,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 02:06:06,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:06,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:06,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:06:06,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 02:06:06,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575894878] [2022-07-13 02:06:06,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:06,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634656749] [2022-07-13 02:06:06,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634656749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:06,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:06,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 02:06:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567668096] [2022-07-13 02:06:06,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:06,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:06:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:06:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:06:06,938 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) [2022-07-13 02:06:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:07,011 INFO L93 Difference]: Finished difference Result 497 states and 645 transitions. [2022-07-13 02:06:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:06:07,011 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 [2022-07-13 02:06:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:07,014 INFO L225 Difference]: With dead ends: 497 [2022-07-13 02:06:07,014 INFO L226 Difference]: Without dead ends: 495 [2022-07-13 02:06:07,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:06:07,015 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:07,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 191 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:06:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-13 02:06:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2022-07-13 02:06:07,030 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) [2022-07-13 02:06:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2022-07-13 02:06:07,032 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 86 [2022-07-13 02:06:07,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:07,032 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2022-07-13 02:06:07,032 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) [2022-07-13 02:06:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2022-07-13 02:06:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 02:06:07,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:07,033 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] [2022-07-13 02:06:07,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:07,255 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 [2022-07-13 02:06:07,256 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash 253172159, now seen corresponding path program 2 times [2022-07-13 02:06:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:07,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459927433] [2022-07-13 02:06:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:07,262 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:07,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958017026] [2022-07-13 02:06:07,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:07,264 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) [2022-07-13 02:06:07,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 02:06:07,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:07,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:07,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:06:07,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 02:06:07,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 02:06:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459927433] [2022-07-13 02:06:07,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958017026] [2022-07-13 02:06:07,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958017026] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:07,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:07,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-07-13 02:06:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241738110] [2022-07-13 02:06:07,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:07,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:06:07,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:06:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:06:07,658 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) [2022-07-13 02:06:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:08,159 INFO L93 Difference]: Finished difference Result 831 states and 1028 transitions. [2022-07-13 02:06:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 02:06:08,159 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 [2022-07-13 02:06:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:08,161 INFO L225 Difference]: With dead ends: 831 [2022-07-13 02:06:08,162 INFO L226 Difference]: Without dead ends: 459 [2022-07-13 02:06:08,163 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 [2022-07-13 02:06:08,164 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 [2022-07-13 02:06:08,164 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] [2022-07-13 02:06:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-13 02:06:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-07-13 02:06:08,181 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) [2022-07-13 02:06:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2022-07-13 02:06:08,183 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 89 [2022-07-13 02:06:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:08,183 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2022-07-13 02:06:08,183 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) [2022-07-13 02:06:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2022-07-13 02:06:08,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 02:06:08,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:08,184 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] [2022-07-13 02:06:08,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-13 02:06:08,399 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 [2022-07-13 02:06:08,399 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2022-07-13 02:06:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273936211] [2022-07-13 02:06:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:08,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:08,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:08,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481073534] [2022-07-13 02:06:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:08,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:08,410 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) [2022-07-13 02:06:08,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 02:06:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:06:08,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 02:06:08,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 02:06:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273936211] [2022-07-13 02:06:08,645 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:08,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481073534] [2022-07-13 02:06:08,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481073534] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:08,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:08,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-13 02:06:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811580667] [2022-07-13 02:06:08,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:08,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:06:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:06:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:08,647 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) [2022-07-13 02:06:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:08,938 INFO L93 Difference]: Finished difference Result 585 states and 719 transitions. [2022-07-13 02:06:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:06:08,938 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 [2022-07-13 02:06:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:08,941 INFO L225 Difference]: With dead ends: 585 [2022-07-13 02:06:08,941 INFO L226 Difference]: Without dead ends: 582 [2022-07-13 02:06:08,942 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 [2022-07-13 02:06:08,942 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 [2022-07-13 02:06:08,942 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] [2022-07-13 02:06:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-07-13 02:06:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 554. [2022-07-13 02:06:08,962 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) [2022-07-13 02:06:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 676 transitions. [2022-07-13 02:06:08,964 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 676 transitions. Word has length 106 [2022-07-13 02:06:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:08,964 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 676 transitions. [2022-07-13 02:06:08,964 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) [2022-07-13 02:06:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 676 transitions. [2022-07-13 02:06:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 02:06:08,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:08,966 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] [2022-07-13 02:06:08,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:09,179 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 [2022-07-13 02:06:09,179 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:09,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2022-07-13 02:06:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756122458] [2022-07-13 02:06:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:09,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:09,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567054836] [2022-07-13 02:06:09,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:09,188 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) [2022-07-13 02:06:09,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 02:06:09,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:09,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:09,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:06:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 02:06:09,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756122458] [2022-07-13 02:06:09,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:09,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567054836] [2022-07-13 02:06:09,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567054836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:09,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:09,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 02:06:09,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914897947] [2022-07-13 02:06:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:06:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:06:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:06:09,305 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) [2022-07-13 02:06:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:09,375 INFO L93 Difference]: Finished difference Result 878 states and 1076 transitions. [2022-07-13 02:06:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:06:09,375 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 [2022-07-13 02:06:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:09,377 INFO L225 Difference]: With dead ends: 878 [2022-07-13 02:06:09,378 INFO L226 Difference]: Without dead ends: 487 [2022-07-13 02:06:09,379 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 [2022-07-13 02:06:09,379 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:09,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 236 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:06:09,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-13 02:06:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2022-07-13 02:06:09,396 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) [2022-07-13 02:06:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 579 transitions. [2022-07-13 02:06:09,398 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 579 transitions. Word has length 112 [2022-07-13 02:06:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:09,398 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 579 transitions. [2022-07-13 02:06:09,398 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) [2022-07-13 02:06:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 579 transitions. [2022-07-13 02:06:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-13 02:06:09,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:09,400 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] [2022-07-13 02:06:09,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:09,622 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 [2022-07-13 02:06:09,623 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2022-07-13 02:06:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:09,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343026354] [2022-07-13 02:06:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:09,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:09,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304002060] [2022-07-13 02:06:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:09,632 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) [2022-07-13 02:06:09,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 02:06:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:09,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:06:09,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 02:06:09,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 02:06:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343026354] [2022-07-13 02:06:10,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:10,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304002060] [2022-07-13 02:06:10,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304002060] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:10,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:10,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-07-13 02:06:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074854361] [2022-07-13 02:06:10,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:06:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:06:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:06:10,422 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) [2022-07-13 02:06:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:11,269 INFO L93 Difference]: Finished difference Result 874 states and 1068 transitions. [2022-07-13 02:06:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 02:06:11,270 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 [2022-07-13 02:06:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:11,271 INFO L225 Difference]: With dead ends: 874 [2022-07-13 02:06:11,271 INFO L226 Difference]: Without dead ends: 529 [2022-07-13 02:06:11,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:06:11,273 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 [2022-07-13 02:06:11,273 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] [2022-07-13 02:06:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-07-13 02:06:11,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 508. [2022-07-13 02:06:11,291 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) [2022-07-13 02:06:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 601 transitions. [2022-07-13 02:06:11,293 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 601 transitions. Word has length 114 [2022-07-13 02:06:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:11,293 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 601 transitions. [2022-07-13 02:06:11,293 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) [2022-07-13 02:06:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 601 transitions. [2022-07-13 02:06:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 02:06:11,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:11,295 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] [2022-07-13 02:06:11,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:11,513 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 [2022-07-13 02:06:11,514 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2022-07-13 02:06:11,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:11,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62189110] [2022-07-13 02:06:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:11,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:11,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:11,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353172555] [2022-07-13 02:06:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:11,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:11,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:11,524 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) [2022-07-13 02:06:11,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 02:06:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:11,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-13 02:06:11,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-13 02:06:11,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62189110] [2022-07-13 02:06:11,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353172555] [2022-07-13 02:06:11,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353172555] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:11,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:11,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-13 02:06:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106778006] [2022-07-13 02:06:11,960 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:11,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:06:11,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:11,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:06:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:06:11,961 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) [2022-07-13 02:06:14,387 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 [] [2022-07-13 02:06:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:14,672 INFO L93 Difference]: Finished difference Result 1053 states and 1314 transitions. [2022-07-13 02:06:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:06:14,673 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 [2022-07-13 02:06:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:14,677 INFO L225 Difference]: With dead ends: 1053 [2022-07-13 02:06:14,677 INFO L226 Difference]: Without dead ends: 715 [2022-07-13 02:06:14,678 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 [2022-07-13 02:06:14,679 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:14,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 819 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 966 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 02:06:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-13 02:06:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 612. [2022-07-13 02:06:14,705 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) [2022-07-13 02:06:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 744 transitions. [2022-07-13 02:06:14,707 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 744 transitions. Word has length 119 [2022-07-13 02:06:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:14,707 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 744 transitions. [2022-07-13 02:06:14,707 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) [2022-07-13 02:06:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 744 transitions. [2022-07-13 02:06:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 02:06:14,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:14,709 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] [2022-07-13 02:06:14,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:14,915 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 [2022-07-13 02:06:14,916 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1295624958, now seen corresponding path program 2 times [2022-07-13 02:06:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:14,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27179880] [2022-07-13 02:06:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:14,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:14,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617161465] [2022-07-13 02:06:14,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:14,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:14,925 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) [2022-07-13 02:06:14,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-13 02:06:14,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:14,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:14,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:06:14,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-13 02:06:15,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-13 02:06:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27179880] [2022-07-13 02:06:15,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617161465] [2022-07-13 02:06:15,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617161465] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:15,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:15,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-07-13 02:06:15,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22213899] [2022-07-13 02:06:15,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:15,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:06:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:15,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:06:15,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:15,247 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) [2022-07-13 02:06:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:15,642 INFO L93 Difference]: Finished difference Result 1187 states and 1470 transitions. [2022-07-13 02:06:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:06:15,642 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 [2022-07-13 02:06:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:15,645 INFO L225 Difference]: With dead ends: 1187 [2022-07-13 02:06:15,645 INFO L226 Difference]: Without dead ends: 672 [2022-07-13 02:06:15,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-07-13 02:06:15,647 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 [2022-07-13 02:06:15,648 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] [2022-07-13 02:06:15,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-13 02:06:15,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 617. [2022-07-13 02:06:15,670 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) [2022-07-13 02:06:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 743 transitions. [2022-07-13 02:06:15,672 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 743 transitions. Word has length 124 [2022-07-13 02:06:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:15,673 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 743 transitions. [2022-07-13 02:06:15,673 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) [2022-07-13 02:06:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 743 transitions. [2022-07-13 02:06:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 02:06:15,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:15,674 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] [2022-07-13 02:06:15,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-13 02:06:15,887 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 [2022-07-13 02:06:15,887 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:15,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2022-07-13 02:06:15,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:15,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555801218] [2022-07-13 02:06:15,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:15,895 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:15,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519326539] [2022-07-13 02:06:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:15,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:15,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:15,897 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) [2022-07-13 02:06:15,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-13 02:06:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:15,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:06:15,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-13 02:06:16,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:16,171 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-13 02:06:16,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:16,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555801218] [2022-07-13 02:06:16,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:16,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519326539] [2022-07-13 02:06:16,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519326539] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:16,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:16,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-13 02:06:16,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223622006] [2022-07-13 02:06:16,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:16,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:06:16,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:06:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:06:16,173 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) [2022-07-13 02:06:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:16,413 INFO L93 Difference]: Finished difference Result 623 states and 744 transitions. [2022-07-13 02:06:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:06:16,414 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 [2022-07-13 02:06:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:16,416 INFO L225 Difference]: With dead ends: 623 [2022-07-13 02:06:16,416 INFO L226 Difference]: Without dead ends: 622 [2022-07-13 02:06:16,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:06:16,417 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 [2022-07-13 02:06:16,417 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] [2022-07-13 02:06:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-13 02:06:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 617. [2022-07-13 02:06:16,449 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) [2022-07-13 02:06:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2022-07-13 02:06:16,451 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 125 [2022-07-13 02:06:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:16,452 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2022-07-13 02:06:16,453 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) [2022-07-13 02:06:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2022-07-13 02:06:16,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 02:06:16,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:16,455 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] [2022-07-13 02:06:16,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:16,675 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 [2022-07-13 02:06:16,676 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash -282687370, now seen corresponding path program 2 times [2022-07-13 02:06:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:16,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270857133] [2022-07-13 02:06:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:16,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:16,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:16,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553544819] [2022-07-13 02:06:16,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:16,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:16,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:16,685 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) [2022-07-13 02:06:16,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-13 02:06:16,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:16,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:16,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:06:16,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 173 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-13 02:06:16,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 88 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-07-13 02:06:16,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270857133] [2022-07-13 02:06:16,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553544819] [2022-07-13 02:06:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553544819] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:16,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:16,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-07-13 02:06:16,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339991561] [2022-07-13 02:06:16,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:16,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:06:16,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:16,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:06:16,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:06:16,908 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) [2022-07-13 02:06:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:17,070 INFO L93 Difference]: Finished difference Result 1067 states and 1314 transitions. [2022-07-13 02:06:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:06:17,075 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 [2022-07-13 02:06:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:17,078 INFO L225 Difference]: With dead ends: 1067 [2022-07-13 02:06:17,078 INFO L226 Difference]: Without dead ends: 622 [2022-07-13 02:06:17,080 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 [2022-07-13 02:06:17,080 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 [2022-07-13 02:06:17,081 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] [2022-07-13 02:06:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-07-13 02:06:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2022-07-13 02:06:17,109 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) [2022-07-13 02:06:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 727 transitions. [2022-07-13 02:06:17,111 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 727 transitions. Word has length 134 [2022-07-13 02:06:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:17,112 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 727 transitions. [2022-07-13 02:06:17,112 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) [2022-07-13 02:06:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 727 transitions. [2022-07-13 02:06:17,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-13 02:06:17,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:17,113 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] [2022-07-13 02:06:17,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-07-13 02:06:17,327 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 [2022-07-13 02:06:17,327 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 3 times [2022-07-13 02:06:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:17,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508505214] [2022-07-13 02:06:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:17,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:17,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486338243] [2022-07-13 02:06:17,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:17,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:17,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:17,338 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) [2022-07-13 02:06:17,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-13 02:06:17,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 02:06:17,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:17,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:06:17,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-13 02:06:17,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:17,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:17,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508505214] [2022-07-13 02:06:17,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:17,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486338243] [2022-07-13 02:06:17,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486338243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:17,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:17,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-13 02:06:17,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425679672] [2022-07-13 02:06:17,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:17,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:06:17,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:17,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:06:17,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-07-13 02:06:17,829 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) [2022-07-13 02:06:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:17,992 INFO L93 Difference]: Finished difference Result 692 states and 865 transitions. [2022-07-13 02:06:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 02:06:17,993 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 [2022-07-13 02:06:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:17,996 INFO L225 Difference]: With dead ends: 692 [2022-07-13 02:06:17,996 INFO L226 Difference]: Without dead ends: 691 [2022-07-13 02:06:17,996 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 [2022-07-13 02:06:17,997 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 [2022-07-13 02:06:17,997 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] [2022-07-13 02:06:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-13 02:06:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 633. [2022-07-13 02:06:18,020 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) [2022-07-13 02:06:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 760 transitions. [2022-07-13 02:06:18,022 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 760 transitions. Word has length 143 [2022-07-13 02:06:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:18,023 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 760 transitions. [2022-07-13 02:06:18,023 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) [2022-07-13 02:06:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 760 transitions. [2022-07-13 02:06:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 02:06:18,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:18,024 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] [2022-07-13 02:06:18,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:18,248 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 [2022-07-13 02:06:18,248 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:18,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2022-07-13 02:06:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71041210] [2022-07-13 02:06:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:18,254 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:18,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479500259] [2022-07-13 02:06:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:18,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:18,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:18,256 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) [2022-07-13 02:06:18,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-13 02:06:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:18,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 02:06:18,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-13 02:06:18,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-13 02:06:18,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71041210] [2022-07-13 02:06:18,815 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479500259] [2022-07-13 02:06:18,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479500259] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:18,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:18,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-07-13 02:06:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385075055] [2022-07-13 02:06:18,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:18,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:06:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:06:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:06:18,816 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) [2022-07-13 02:06:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:19,127 INFO L93 Difference]: Finished difference Result 1341 states and 1694 transitions. [2022-07-13 02:06:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:06:19,128 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 [2022-07-13 02:06:19,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:19,132 INFO L225 Difference]: With dead ends: 1341 [2022-07-13 02:06:19,132 INFO L226 Difference]: Without dead ends: 777 [2022-07-13 02:06:19,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:06:19,136 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 [2022-07-13 02:06:19,137 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] [2022-07-13 02:06:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-13 02:06:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 680. [2022-07-13 02:06:19,177 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) [2022-07-13 02:06:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 821 transitions. [2022-07-13 02:06:19,180 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 821 transitions. Word has length 146 [2022-07-13 02:06:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:19,180 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 821 transitions. [2022-07-13 02:06:19,180 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) [2022-07-13 02:06:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 821 transitions. [2022-07-13 02:06:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 02:06:19,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:19,182 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] [2022-07-13 02:06:19,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-07-13 02:06:19,395 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 [2022-07-13 02:06:19,395 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash -775399783, now seen corresponding path program 4 times [2022-07-13 02:06:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:19,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9042727] [2022-07-13 02:06:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:19,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:19,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963734846] [2022-07-13 02:06:19,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:06:19,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:19,405 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) [2022-07-13 02:06:19,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-13 02:06:19,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:06:19,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:19,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:06:19,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 99 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-13 02:06:19,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 106 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-13 02:06:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9042727] [2022-07-13 02:06:20,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:20,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963734846] [2022-07-13 02:06:20,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963734846] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:20,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:20,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 21 [2022-07-13 02:06:20,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708652877] [2022-07-13 02:06:20,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:20,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 02:06:20,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 02:06:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:06:20,101 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) [2022-07-13 02:06:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:20,740 INFO L93 Difference]: Finished difference Result 1464 states and 1866 transitions. [2022-07-13 02:06:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 02:06:20,741 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 [2022-07-13 02:06:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:20,744 INFO L225 Difference]: With dead ends: 1464 [2022-07-13 02:06:20,744 INFO L226 Difference]: Without dead ends: 878 [2022-07-13 02:06:20,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 02:06:20,746 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-13 02:06:20,746 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] [2022-07-13 02:06:20,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-07-13 02:06:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 714. [2022-07-13 02:06:20,787 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) [2022-07-13 02:06:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 872 transitions. [2022-07-13 02:06:20,789 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 872 transitions. Word has length 163 [2022-07-13 02:06:20,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:20,791 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 872 transitions. [2022-07-13 02:06:20,791 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) [2022-07-13 02:06:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 872 transitions. [2022-07-13 02:06:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 02:06:20,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:20,796 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] [2022-07-13 02:06:20,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:21,011 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 [2022-07-13 02:06:21,011 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2022-07-13 02:06:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643711780] [2022-07-13 02:06:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:21,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:21,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500421818] [2022-07-13 02:06:21,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:21,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:21,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:21,020 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) [2022-07-13 02:06:21,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-13 02:06:21,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:21,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:21,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:06:21,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-07-13 02:06:21,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-07-13 02:06:21,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643711780] [2022-07-13 02:06:21,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500421818] [2022-07-13 02:06:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500421818] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:21,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-13 02:06:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108366516] [2022-07-13 02:06:21,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:06:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:06:21,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:06:21,256 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) [2022-07-13 02:06:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:21,433 INFO L93 Difference]: Finished difference Result 903 states and 1126 transitions. [2022-07-13 02:06:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 02:06:21,433 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 [2022-07-13 02:06:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:21,437 INFO L225 Difference]: With dead ends: 903 [2022-07-13 02:06:21,437 INFO L226 Difference]: Without dead ends: 902 [2022-07-13 02:06:21,438 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 [2022-07-13 02:06:21,438 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 [2022-07-13 02:06:21,438 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] [2022-07-13 02:06:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-13 02:06:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 842. [2022-07-13 02:06:21,471 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) [2022-07-13 02:06:21,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1047 transitions. [2022-07-13 02:06:21,474 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1047 transitions. Word has length 156 [2022-07-13 02:06:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:21,475 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1047 transitions. [2022-07-13 02:06:21,475 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) [2022-07-13 02:06:21,475 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1047 transitions. [2022-07-13 02:06:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 02:06:21,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:21,477 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] [2022-07-13 02:06:21,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:21,699 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 [2022-07-13 02:06:21,699 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2022-07-13 02:06:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:21,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132720598] [2022-07-13 02:06:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:21,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:21,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:21,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106943984] [2022-07-13 02:06:21,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:21,713 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) [2022-07-13 02:06:21,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-13 02:06:21,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:06:21,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:21,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:06:21,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-13 02:06:21,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-07-13 02:06:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132720598] [2022-07-13 02:06:21,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106943984] [2022-07-13 02:06:21,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106943984] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:21,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:21,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-07-13 02:06:21,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103072699] [2022-07-13 02:06:21,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:21,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 02:06:21,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 02:06:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:21,942 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) [2022-07-13 02:06:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:22,253 INFO L93 Difference]: Finished difference Result 949 states and 1201 transitions. [2022-07-13 02:06:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:06:22,253 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 [2022-07-13 02:06:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:22,257 INFO L225 Difference]: With dead ends: 949 [2022-07-13 02:06:22,258 INFO L226 Difference]: Without dead ends: 948 [2022-07-13 02:06:22,258 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 [2022-07-13 02:06:22,261 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 [2022-07-13 02:06:22,261 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] [2022-07-13 02:06:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2022-07-13 02:06:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 931. [2022-07-13 02:06:22,304 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) [2022-07-13 02:06:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1163 transitions. [2022-07-13 02:06:22,307 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1163 transitions. Word has length 166 [2022-07-13 02:06:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:22,308 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1163 transitions. [2022-07-13 02:06:22,308 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) [2022-07-13 02:06:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1163 transitions. [2022-07-13 02:06:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 02:06:22,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:22,309 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] [2022-07-13 02:06:22,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:22,522 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 [2022-07-13 02:06:22,522 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:22,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2022-07-13 02:06:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:22,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376796438] [2022-07-13 02:06:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:22,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:22,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:22,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994102954] [2022-07-13 02:06:22,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:22,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:22,531 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) [2022-07-13 02:06:22,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-07-13 02:06:22,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:22,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:22,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:06:22,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-07-13 02:06:22,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:22,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376796438] [2022-07-13 02:06:22,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:22,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994102954] [2022-07-13 02:06:22,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994102954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:22,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:22,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 02:06:22,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661266179] [2022-07-13 02:06:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:22,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:06:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:06:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 02:06:22,727 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) [2022-07-13 02:06:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:22,938 INFO L93 Difference]: Finished difference Result 1743 states and 2237 transitions. [2022-07-13 02:06:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:06:22,939 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 [2022-07-13 02:06:22,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:22,942 INFO L225 Difference]: With dead ends: 1743 [2022-07-13 02:06:22,942 INFO L226 Difference]: Without dead ends: 1024 [2022-07-13 02:06:22,943 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 [2022-07-13 02:06:22,944 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 [2022-07-13 02:06:22,944 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] [2022-07-13 02:06:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-07-13 02:06:22,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 933. [2022-07-13 02:06:22,989 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) [2022-07-13 02:06:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1179 transitions. [2022-07-13 02:06:22,992 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1179 transitions. Word has length 169 [2022-07-13 02:06:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:22,992 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1179 transitions. [2022-07-13 02:06:22,992 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) [2022-07-13 02:06:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1179 transitions. [2022-07-13 02:06:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 02:06:22,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:22,993 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] [2022-07-13 02:06:23,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:23,216 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 [2022-07-13 02:06:23,216 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:23,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2022-07-13 02:06:23,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:23,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366643815] [2022-07-13 02:06:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:23,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:23,226 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:23,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3692541] [2022-07-13 02:06:23,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:23,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:23,228 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) [2022-07-13 02:06:23,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-07-13 02:06:23,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-13 02:06:23,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:23,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:06:23,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-13 02:06:23,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-07-13 02:06:23,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366643815] [2022-07-13 02:06:23,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3692541] [2022-07-13 02:06:23,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3692541] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:23,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:23,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-13 02:06:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627981258] [2022-07-13 02:06:23,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:23,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:06:23,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:06:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-13 02:06:23,569 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) [2022-07-13 02:06:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:23,829 INFO L93 Difference]: Finished difference Result 935 states and 1179 transitions. [2022-07-13 02:06:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:06:23,829 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 [2022-07-13 02:06:23,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:23,833 INFO L225 Difference]: With dead ends: 935 [2022-07-13 02:06:23,833 INFO L226 Difference]: Without dead ends: 934 [2022-07-13 02:06:23,833 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 [2022-07-13 02:06:23,834 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 [2022-07-13 02:06:23,834 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] [2022-07-13 02:06:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-07-13 02:06:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 933. [2022-07-13 02:06:23,869 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) [2022-07-13 02:06:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1171 transitions. [2022-07-13 02:06:23,872 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1171 transitions. Word has length 179 [2022-07-13 02:06:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:23,872 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1171 transitions. [2022-07-13 02:06:23,873 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) [2022-07-13 02:06:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1171 transitions. [2022-07-13 02:06:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-13 02:06:23,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:23,874 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] [2022-07-13 02:06:23,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:24,095 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 [2022-07-13 02:06:24,095 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2022-07-13 02:06:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:24,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122188451] [2022-07-13 02:06:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:24,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:24,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107832567] [2022-07-13 02:06:24,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:06:24,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:24,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:24,106 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) [2022-07-13 02:06:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-07-13 02:06:24,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:06:24,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:24,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:06:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-13 02:06:24,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-07-13 02:06:24,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:24,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122188451] [2022-07-13 02:06:24,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:24,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107832567] [2022-07-13 02:06:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107832567] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:24,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:24,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2022-07-13 02:06:24,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733804654] [2022-07-13 02:06:24,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:24,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 02:06:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 02:06:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:06:24,597 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) [2022-07-13 02:06:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:25,049 INFO L93 Difference]: Finished difference Result 1881 states and 2490 transitions. [2022-07-13 02:06:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:06:25,050 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 [2022-07-13 02:06:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:25,057 INFO L225 Difference]: With dead ends: 1881 [2022-07-13 02:06:25,057 INFO L226 Difference]: Without dead ends: 1204 [2022-07-13 02:06:25,059 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 [2022-07-13 02:06:25,060 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 144 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:25,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 647 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:06:25,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-07-13 02:06:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1138. [2022-07-13 02:06:25,112 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) [2022-07-13 02:06:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1476 transitions. [2022-07-13 02:06:25,116 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1476 transitions. Word has length 176 [2022-07-13 02:06:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:25,116 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1476 transitions. [2022-07-13 02:06:25,116 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) [2022-07-13 02:06:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1476 transitions. [2022-07-13 02:06:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-13 02:06:25,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:25,118 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] [2022-07-13 02:06:25,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:25,340 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 [2022-07-13 02:06:25,340 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:25,340 INFO L85 PathProgramCache]: Analyzing trace with hash 220180665, now seen corresponding path program 5 times [2022-07-13 02:06:25,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:25,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991485827] [2022-07-13 02:06:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:25,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640953856] [2022-07-13 02:06:25,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:06:25,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:25,352 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) [2022-07-13 02:06:25,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-07-13 02:06:25,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-13 02:06:25,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:25,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 02:06:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 552 proven. 105 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-07-13 02:06:25,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 329 proven. 236 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-07-13 02:06:26,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991485827] [2022-07-13 02:06:26,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640953856] [2022-07-13 02:06:26,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640953856] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:26,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:26,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 25 [2022-07-13 02:06:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331882906] [2022-07-13 02:06:26,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:26,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 02:06:26,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:26,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 02:06:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2022-07-13 02:06:26,534 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) [2022-07-13 02:06:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:27,728 INFO L93 Difference]: Finished difference Result 2712 states and 3813 transitions. [2022-07-13 02:06:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 02:06:27,728 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 [2022-07-13 02:06:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:27,736 INFO L225 Difference]: With dead ends: 2712 [2022-07-13 02:06:27,736 INFO L226 Difference]: Without dead ends: 1644 [2022-07-13 02:06:27,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2022-07-13 02:06:27,741 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 338 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:27,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 663 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:06:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-07-13 02:06:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1390. [2022-07-13 02:06:27,834 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) [2022-07-13 02:06:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1903 transitions. [2022-07-13 02:06:27,839 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1903 transitions. Word has length 203 [2022-07-13 02:06:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:27,840 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1903 transitions. [2022-07-13 02:06:27,840 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) [2022-07-13 02:06:27,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1903 transitions. [2022-07-13 02:06:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-13 02:06:27,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:27,842 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] [2022-07-13 02:06:27,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:28,055 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 [2022-07-13 02:06:28,055 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:28,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:28,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2022-07-13 02:06:28,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:28,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320670405] [2022-07-13 02:06:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:28,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:28,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:28,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98886195] [2022-07-13 02:06:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:28,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:28,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:28,064 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) [2022-07-13 02:06:28,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-07-13 02:06:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:28,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:06:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2022-07-13 02:06:28,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:28,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320670405] [2022-07-13 02:06:28,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98886195] [2022-07-13 02:06:28,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98886195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:28,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:28,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:06:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658095648] [2022-07-13 02:06:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:28,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:06:28,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:06:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:06:28,162 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) [2022-07-13 02:06:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:28,241 INFO L93 Difference]: Finished difference Result 1497 states and 2025 transitions. [2022-07-13 02:06:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:06:28,242 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 [2022-07-13 02:06:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:28,248 INFO L225 Difference]: With dead ends: 1497 [2022-07-13 02:06:28,248 INFO L226 Difference]: Without dead ends: 1494 [2022-07-13 02:06:28,249 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 [2022-07-13 02:06:28,250 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 [2022-07-13 02:06:28,250 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] [2022-07-13 02:06:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-07-13 02:06:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1398. [2022-07-13 02:06:28,321 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) [2022-07-13 02:06:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1909 transitions. [2022-07-13 02:06:28,326 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1909 transitions. Word has length 197 [2022-07-13 02:06:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:28,327 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1909 transitions. [2022-07-13 02:06:28,327 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) [2022-07-13 02:06:28,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1909 transitions. [2022-07-13 02:06:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-13 02:06:28,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:28,329 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] [2022-07-13 02:06:28,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:28,543 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 [2022-07-13 02:06:28,543 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2037013593, now seen corresponding path program 6 times [2022-07-13 02:06:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110039465] [2022-07-13 02:06:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:28,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:28,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751052963] [2022-07-13 02:06:28,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:06:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:28,554 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) [2022-07-13 02:06:28,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-07-13 02:06:28,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-07-13 02:06:28,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 02:06:28,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 246 proven. 18 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-07-13 02:06:28,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:29,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:29,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110039465] [2022-07-13 02:06:29,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751052963] [2022-07-13 02:06:29,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751052963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:29,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:29,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-13 02:06:29,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153274866] [2022-07-13 02:06:29,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:29,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 02:06:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:29,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 02:06:29,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:06:29,461 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) [2022-07-13 02:06:29,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:29,740 INFO L93 Difference]: Finished difference Result 1464 states and 2043 transitions. [2022-07-13 02:06:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 02:06:29,741 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 [2022-07-13 02:06:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:29,750 INFO L225 Difference]: With dead ends: 1464 [2022-07-13 02:06:29,750 INFO L226 Difference]: Without dead ends: 1463 [2022-07-13 02:06:29,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:06:29,751 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 25 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-13 02:06:29,752 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] [2022-07-13 02:06:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-13 02:06:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1433. [2022-07-13 02:06:29,822 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) [2022-07-13 02:06:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1952 transitions. [2022-07-13 02:06:29,839 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1952 transitions. Word has length 213 [2022-07-13 02:06:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:29,839 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1952 transitions. [2022-07-13 02:06:29,840 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) [2022-07-13 02:06:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1952 transitions. [2022-07-13 02:06:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-13 02:06:29,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:29,841 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] [2022-07-13 02:06:29,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:30,064 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 [2022-07-13 02:06:30,064 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2022-07-13 02:06:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:30,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112886275] [2022-07-13 02:06:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:30,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:30,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860369975] [2022-07-13 02:06:30,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:30,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:30,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:30,077 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) [2022-07-13 02:06:30,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-07-13 02:06:30,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:30,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:30,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:06:30,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-13 02:06:30,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-13 02:06:30,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112886275] [2022-07-13 02:06:30,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:30,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860369975] [2022-07-13 02:06:30,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860369975] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:30,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:30,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-07-13 02:06:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974227581] [2022-07-13 02:06:30,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:30,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:06:30,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:30,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:06:30,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:06:30,562 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) [2022-07-13 02:06:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:31,207 INFO L93 Difference]: Finished difference Result 2647 states and 3687 transitions. [2022-07-13 02:06:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 02:06:31,208 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 [2022-07-13 02:06:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:31,214 INFO L225 Difference]: With dead ends: 2647 [2022-07-13 02:06:31,215 INFO L226 Difference]: Without dead ends: 1463 [2022-07-13 02:06:31,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-07-13 02:06:31,220 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:31,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 465 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:06:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-13 02:06:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1386. [2022-07-13 02:06:31,288 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) [2022-07-13 02:06:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1827 transitions. [2022-07-13 02:06:31,294 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1827 transitions. Word has length 207 [2022-07-13 02:06:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:31,294 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1827 transitions. [2022-07-13 02:06:31,295 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) [2022-07-13 02:06:31,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1827 transitions. [2022-07-13 02:06:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-13 02:06:31,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:31,296 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] [2022-07-13 02:06:31,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:31,519 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 [2022-07-13 02:06:31,519 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash 502851865, now seen corresponding path program 7 times [2022-07-13 02:06:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:31,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000540938] [2022-07-13 02:06:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:31,544 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725918578] [2022-07-13 02:06:31,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:06:31,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:31,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:31,548 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) [2022-07-13 02:06:31,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-07-13 02:06:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:31,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:06:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 336 proven. 51 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-13 02:06:31,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 336 proven. 57 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2022-07-13 02:06:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000540938] [2022-07-13 02:06:32,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725918578] [2022-07-13 02:06:32,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725918578] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:32,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:32,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 20 [2022-07-13 02:06:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920418112] [2022-07-13 02:06:32,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:32,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 02:06:32,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 02:06:32,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:06:32,210 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) [2022-07-13 02:06:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:32,910 INFO L93 Difference]: Finished difference Result 2938 states and 3976 transitions. [2022-07-13 02:06:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 02:06:32,910 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 [2022-07-13 02:06:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:32,917 INFO L225 Difference]: With dead ends: 2938 [2022-07-13 02:06:32,917 INFO L226 Difference]: Without dead ends: 1667 [2022-07-13 02:06:32,922 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 [2022-07-13 02:06:32,923 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 101 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:32,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 724 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:06:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2022-07-13 02:06:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1581. [2022-07-13 02:06:33,001 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) [2022-07-13 02:06:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2086 transitions. [2022-07-13 02:06:33,007 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2086 transitions. Word has length 213 [2022-07-13 02:06:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:33,008 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 2086 transitions. [2022-07-13 02:06:33,008 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) [2022-07-13 02:06:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2086 transitions. [2022-07-13 02:06:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 02:06:33,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:33,010 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] [2022-07-13 02:06:33,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-07-13 02:06:33,223 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 [2022-07-13 02:06:33,223 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1483060659, now seen corresponding path program 3 times [2022-07-13 02:06:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098668464] [2022-07-13 02:06:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:33,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460195070] [2022-07-13 02:06:33,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:33,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:33,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:33,231 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) [2022-07-13 02:06:33,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-07-13 02:06:33,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 02:06:33,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:33,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 02:06:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 319 proven. 40 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2022-07-13 02:06:33,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:34,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:34,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098668464] [2022-07-13 02:06:34,924 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:34,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460195070] [2022-07-13 02:06:34,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460195070] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:34,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:34,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-07-13 02:06:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662911259] [2022-07-13 02:06:34,925 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:34,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:06:34,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:34,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:06:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:06:34,926 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) [2022-07-13 02:06:36,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:36,202 INFO L93 Difference]: Finished difference Result 1695 states and 2340 transitions. [2022-07-13 02:06:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:06:36,204 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 [2022-07-13 02:06:36,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:36,211 INFO L225 Difference]: With dead ends: 1695 [2022-07-13 02:06:36,212 INFO L226 Difference]: Without dead ends: 1694 [2022-07-13 02:06:36,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2022-07-13 02:06:36,213 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 58 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 362 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:06:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-07-13 02:06:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1606. [2022-07-13 02:06:36,307 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) [2022-07-13 02:06:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2119 transitions. [2022-07-13 02:06:36,313 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2119 transitions. Word has length 224 [2022-07-13 02:06:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:36,313 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2119 transitions. [2022-07-13 02:06:36,313 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) [2022-07-13 02:06:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2119 transitions. [2022-07-13 02:06:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 02:06:36,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:36,315 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] [2022-07-13 02:06:36,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:36,534 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 [2022-07-13 02:06:36,534 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash -639257203, now seen corresponding path program 4 times [2022-07-13 02:06:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:36,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976422719] [2022-07-13 02:06:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:36,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:36,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810640119] [2022-07-13 02:06:36,543 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:06:36,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:36,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:36,544 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) [2022-07-13 02:06:36,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-07-13 02:06:36,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:06:36,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:36,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:06:36,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 141 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-07-13 02:06:36,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 251 proven. 142 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-07-13 02:06:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:37,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976422719] [2022-07-13 02:06:37,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:37,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810640119] [2022-07-13 02:06:37,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810640119] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:37,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:37,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2022-07-13 02:06:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239650960] [2022-07-13 02:06:37,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:06:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:06:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:06:37,185 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) [2022-07-13 02:06:37,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:37,978 INFO L93 Difference]: Finished difference Result 3807 states and 5288 transitions. [2022-07-13 02:06:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 02:06:37,979 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 [2022-07-13 02:06:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:37,987 INFO L225 Difference]: With dead ends: 3807 [2022-07-13 02:06:37,987 INFO L226 Difference]: Without dead ends: 2482 [2022-07-13 02:06:37,993 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 [2022-07-13 02:06:37,993 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 274 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:37,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 354 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:06:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-07-13 02:06:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2029. [2022-07-13 02:06:38,113 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) [2022-07-13 02:06:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2769 transitions. [2022-07-13 02:06:38,119 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2769 transitions. Word has length 224 [2022-07-13 02:06:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:38,119 INFO L495 AbstractCegarLoop]: Abstraction has 2029 states and 2769 transitions. [2022-07-13 02:06:38,120 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) [2022-07-13 02:06:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2769 transitions. [2022-07-13 02:06:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-13 02:06:38,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:38,122 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 12, 10, 10, 10, 10, 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] [2022-07-13 02:06:38,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:38,343 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 [2022-07-13 02:06:38,344 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:38,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1276794390, now seen corresponding path program 5 times [2022-07-13 02:06:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:38,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792011094] [2022-07-13 02:06:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:38,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:38,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341786325] [2022-07-13 02:06:38,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:06:38,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:38,352 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) [2022-07-13 02:06:38,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-07-13 02:06:38,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-07-13 02:06:38,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:38,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:06:38,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-07-13 02:06:38,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:06:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:38,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792011094] [2022-07-13 02:06:38,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:38,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341786325] [2022-07-13 02:06:38,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341786325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:06:38,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:06:38,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 02:06:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513859406] [2022-07-13 02:06:38,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:06:38,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:06:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:06:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:06:38,515 INFO L87 Difference]: Start difference. First operand 2029 states and 2769 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) [2022-07-13 02:06:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:38,820 INFO L93 Difference]: Finished difference Result 3578 states and 4977 transitions. [2022-07-13 02:06:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:06:38,820 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 232 [2022-07-13 02:06:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:38,828 INFO L225 Difference]: With dead ends: 3578 [2022-07-13 02:06:38,828 INFO L226 Difference]: Without dead ends: 1970 [2022-07-13 02:06:38,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-13 02:06:38,835 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:38,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 304 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:06:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-07-13 02:06:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1959. [2022-07-13 02:06:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1525 states have (on average 1.1383606557377048) internal successors, (1736), 1522 states have internal predecessors, (1736), 302 states have call successors, (302), 82 states have call predecessors, (302), 125 states have return successors, (591), 354 states have call predecessors, (591), 302 states have call successors, (591) [2022-07-13 02:06:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2629 transitions. [2022-07-13 02:06:38,963 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2629 transitions. Word has length 232 [2022-07-13 02:06:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:38,963 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2629 transitions. [2022-07-13 02:06:38,963 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) [2022-07-13 02:06:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2629 transitions. [2022-07-13 02:06:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-13 02:06:38,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:38,966 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 14, 14, 14, 14, 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] [2022-07-13 02:06:38,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:39,171 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 [2022-07-13 02:06:39,171 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:39,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:39,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1842717523, now seen corresponding path program 8 times [2022-07-13 02:06:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:39,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782041779] [2022-07-13 02:06:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:39,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:39,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:39,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325897151] [2022-07-13 02:06:39,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:06:39,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:39,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:39,183 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) [2022-07-13 02:06:39,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-07-13 02:06:39,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:06:39,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:39,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:06:39,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 495 proven. 68 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2022-07-13 02:06:39,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 495 proven. 74 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2022-07-13 02:06:40,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:40,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782041779] [2022-07-13 02:06:40,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:40,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325897151] [2022-07-13 02:06:40,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325897151] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:40,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:40,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 30 [2022-07-13 02:06:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920248317] [2022-07-13 02:06:40,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:40,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 02:06:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 02:06:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-13 02:06:40,123 INFO L87 Difference]: Start difference. First operand 1959 states and 2629 transitions. Second operand has 30 states, 30 states have (on average 3.7) internal successors, (111), 27 states have internal predecessors, (111), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2022-07-13 02:06:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:41,248 INFO L93 Difference]: Finished difference Result 4235 states and 5767 transitions. [2022-07-13 02:06:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 02:06:41,249 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 27 states have internal predecessors, (111), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) Word has length 267 [2022-07-13 02:06:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:41,258 INFO L225 Difference]: With dead ends: 4235 [2022-07-13 02:06:41,259 INFO L226 Difference]: Without dead ends: 2420 [2022-07-13 02:06:41,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=2030, Unknown=0, NotChecked=0, Total=2352 [2022-07-13 02:06:41,267 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 180 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:41,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 667 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:06:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2022-07-13 02:06:41,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2342. [2022-07-13 02:06:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 1837 states have (on average 1.1486118671747414) internal successors, (2110), 1824 states have internal predecessors, (2110), 356 states have call successors, (356), 96 states have call predecessors, (356), 142 states have return successors, (684), 421 states have call predecessors, (684), 356 states have call successors, (684) [2022-07-13 02:06:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3150 transitions. [2022-07-13 02:06:41,419 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3150 transitions. Word has length 267 [2022-07-13 02:06:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:41,419 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3150 transitions. [2022-07-13 02:06:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7) internal successors, (111), 27 states have internal predecessors, (111), 16 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (20), 13 states have call predecessors, (20), 14 states have call successors, (20) [2022-07-13 02:06:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3150 transitions. [2022-07-13 02:06:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-13 02:06:41,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:41,423 INFO L195 NwaCegarLoop]: trace histogram [25, 22, 13, 13, 13, 13, 12, 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] [2022-07-13 02:06:41,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:41,639 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 [2022-07-13 02:06:41,639 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 975038634, now seen corresponding path program 6 times [2022-07-13 02:06:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:41,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39980371] [2022-07-13 02:06:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:41,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:41,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:41,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139710981] [2022-07-13 02:06:41,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:06:41,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:41,649 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) [2022-07-13 02:06:41,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-07-13 02:06:41,744 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-07-13 02:06:41,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:41,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:06:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 723 proven. 20 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-07-13 02:06:41,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 215 proven. 86 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2022-07-13 02:06:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39980371] [2022-07-13 02:06:42,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139710981] [2022-07-13 02:06:42,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139710981] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:42,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:42,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2022-07-13 02:06:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978165556] [2022-07-13 02:06:42,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 02:06:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 02:06:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:06:42,186 INFO L87 Difference]: Start difference. First operand 2342 states and 3150 transitions. Second operand has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 18 states have internal predecessors, (100), 12 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-13 02:06:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:43,009 INFO L93 Difference]: Finished difference Result 5093 states and 7057 transitions. [2022-07-13 02:06:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 02:06:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 18 states have internal predecessors, (100), 12 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 252 [2022-07-13 02:06:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:43,019 INFO L225 Difference]: With dead ends: 5093 [2022-07-13 02:06:43,020 INFO L226 Difference]: Without dead ends: 3059 [2022-07-13 02:06:43,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1391, Unknown=0, NotChecked=0, Total=1640 [2022-07-13 02:06:43,028 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 130 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:43,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 830 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:06:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2022-07-13 02:06:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2688. [2022-07-13 02:06:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2118 states have (on average 1.151558073654391) internal successors, (2439), 2093 states have internal predecessors, (2439), 405 states have call successors, (405), 108 states have call predecessors, (405), 158 states have return successors, (786), 486 states have call predecessors, (786), 405 states have call successors, (786) [2022-07-13 02:06:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 3630 transitions. [2022-07-13 02:06:43,185 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 3630 transitions. Word has length 252 [2022-07-13 02:06:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:43,186 INFO L495 AbstractCegarLoop]: Abstraction has 2688 states and 3630 transitions. [2022-07-13 02:06:43,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 18 states have internal predecessors, (100), 12 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-13 02:06:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 3630 transitions. [2022-07-13 02:06:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-13 02:06:43,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:43,188 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] [2022-07-13 02:06:43,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:43,403 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 [2022-07-13 02:06:43,404 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1219632254, now seen corresponding path program 1 times [2022-07-13 02:06:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827025799] [2022-07-13 02:06:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:43,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:43,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:43,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777561543] [2022-07-13 02:06:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:43,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:43,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:43,415 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) [2022-07-13 02:06:43,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-07-13 02:06:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:43,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 02:06:43,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 511 proven. 36 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2022-07-13 02:06:43,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2022-07-13 02:06:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:43,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827025799] [2022-07-13 02:06:43,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777561543] [2022-07-13 02:06:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777561543] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:43,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:06:43,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-13 02:06:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862204805] [2022-07-13 02:06:43,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:43,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:06:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:43,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:06:43,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:06:43,915 INFO L87 Difference]: Start difference. First operand 2688 states and 3630 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) [2022-07-13 02:06:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:44,305 INFO L93 Difference]: Finished difference Result 5102 states and 6965 transitions. [2022-07-13 02:06:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 02:06:44,307 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 [2022-07-13 02:06:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:44,313 INFO L225 Difference]: With dead ends: 5102 [2022-07-13 02:06:44,313 INFO L226 Difference]: Without dead ends: 2753 [2022-07-13 02:06:44,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2022-07-13 02:06:44,318 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 94 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:44,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 625 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:06:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-07-13 02:06:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2727. [2022-07-13 02:06:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2152 states have (on average 1.1510223048327137) internal successors, (2477), 2127 states have internal predecessors, (2477), 410 states have call successors, (410), 108 states have call predecessors, (410), 158 states have return successors, (796), 491 states have call predecessors, (796), 410 states have call successors, (796) [2022-07-13 02:06:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3683 transitions. [2022-07-13 02:06:44,479 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3683 transitions. Word has length 254 [2022-07-13 02:06:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:44,480 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 3683 transitions. [2022-07-13 02:06:44,480 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) [2022-07-13 02:06:44,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3683 transitions. [2022-07-13 02:06:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-13 02:06:44,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:44,482 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] [2022-07-13 02:06:44,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:44,705 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 [2022-07-13 02:06:44,705 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:06:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 918771219, now seen corresponding path program 9 times [2022-07-13 02:06:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:44,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759261316] [2022-07-13 02:06:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:44,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:06:44,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133258406] [2022-07-13 02:06:44,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:06:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:44,714 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) [2022-07-13 02:06:44,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-07-13 02:06:44,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 02:06:44,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:44,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 02:06:44,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 633 proven. 125 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2022-07-13 02:06:52,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759261316] [2022-07-13 02:06:55,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:06:55,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133258406] [2022-07-13 02:06:55,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133258406] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:55,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:06:55,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-13 02:06:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116025041] [2022-07-13 02:06:55,854 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 02:06:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 02:06:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=857, Unknown=5, NotChecked=0, Total=992 [2022-07-13 02:06:55,855 INFO L87 Difference]: Start difference. First operand 2727 states and 3683 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) [2022-07-13 02:07:04,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:04,585 INFO L93 Difference]: Finished difference Result 3122 states and 4401 transitions. [2022-07-13 02:07:04,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 02:07:04,587 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 [2022-07-13 02:07:04,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:04,611 INFO L225 Difference]: With dead ends: 3122 [2022-07-13 02:07:04,611 INFO L226 Difference]: Without dead ends: 3121 [2022-07-13 02:07:04,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=281, Invalid=1692, Unknown=7, NotChecked=0, Total=1980 [2022-07-13 02:07:04,613 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 136 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:04,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 830 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 639 Invalid, 0 Unknown, 187 Unchecked, 0.4s Time] [2022-07-13 02:07:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-07-13 02:07:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 2765. [2022-07-13 02:07:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 2178 states have (on average 1.1501377410468319) internal successors, (2505), 2152 states have internal predecessors, (2505), 421 states have call successors, (421), 120 states have call predecessors, (421), 159 states have return successors, (838), 492 states have call predecessors, (838), 421 states have call successors, (838) [2022-07-13 02:07:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3764 transitions. [2022-07-13 02:07:04,777 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3764 transitions. Word has length 297 [2022-07-13 02:07:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:04,778 INFO L495 AbstractCegarLoop]: Abstraction has 2765 states and 3764 transitions. [2022-07-13 02:07:04,778 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) [2022-07-13 02:07:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3764 transitions. [2022-07-13 02:07:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-13 02:07:04,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:04,780 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] [2022-07-13 02:07:04,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:05,005 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 [2022-07-13 02:07:05,005 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:05,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1900955757, now seen corresponding path program 10 times [2022-07-13 02:07:05,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961510801] [2022-07-13 02:07:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:05,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:05,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:05,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778986086] [2022-07-13 02:07:05,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:07:05,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:05,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:05,014 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) [2022-07-13 02:07:05,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-07-13 02:07:05,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:07:05,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:05,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 02:07:05,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2635 backedges. 1417 proven. 226 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-07-13 02:07:05,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2635 backedges. 599 proven. 524 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-07-13 02:07:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961510801] [2022-07-13 02:07:06,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778986086] [2022-07-13 02:07:06,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778986086] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:06,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:06,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 23 [2022-07-13 02:07:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32226574] [2022-07-13 02:07:06,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 02:07:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 02:07:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:07:06,303 INFO L87 Difference]: Start difference. First operand 2765 states and 3764 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) [2022-07-13 02:07:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:07,157 INFO L93 Difference]: Finished difference Result 6046 states and 8438 transitions. [2022-07-13 02:07:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 02:07:07,158 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 [2022-07-13 02:07:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:07,167 INFO L225 Difference]: With dead ends: 6046 [2022-07-13 02:07:07,168 INFO L226 Difference]: Without dead ends: 3344 [2022-07-13 02:07:07,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=1006, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 02:07:07,175 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 179 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:07,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 572 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:07:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-07-13 02:07:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2772. [2022-07-13 02:07:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2189 states have (on average 1.154408405664687) internal successors, (2527), 2162 states have internal predecessors, (2527), 418 states have call successors, (418), 132 states have call predecessors, (418), 158 states have return successors, (833), 477 states have call predecessors, (833), 418 states have call successors, (833) [2022-07-13 02:07:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3778 transitions. [2022-07-13 02:07:07,348 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3778 transitions. Word has length 317 [2022-07-13 02:07:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:07,349 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 3778 transitions. [2022-07-13 02:07:07,349 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) [2022-07-13 02:07:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3778 transitions. [2022-07-13 02:07:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-13 02:07:07,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:07,352 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] [2022-07-13 02:07:07,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-07-13 02:07:07,574 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 [2022-07-13 02:07:07,574 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1420259763, now seen corresponding path program 11 times [2022-07-13 02:07:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:07,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548996686] [2022-07-13 02:07:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:07,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:07,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462793907] [2022-07-13 02:07:07,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:07:07,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:07,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:07,585 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) [2022-07-13 02:07:07,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-07-13 02:07:07,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-07-13 02:07:07,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:07,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:07:07,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 1559 proven. 156 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2022-07-13 02:07:08,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 687 proven. 425 refuted. 0 times theorem prover too weak. 1742 trivial. 0 not checked. [2022-07-13 02:07:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548996686] [2022-07-13 02:07:08,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462793907] [2022-07-13 02:07:08,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462793907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:08,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 25 [2022-07-13 02:07:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883749819] [2022-07-13 02:07:08,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 02:07:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 02:07:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-13 02:07:08,853 INFO L87 Difference]: Start difference. First operand 2772 states and 3778 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) [2022-07-13 02:07:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:09,935 INFO L93 Difference]: Finished difference Result 6143 states and 8542 transitions. [2022-07-13 02:07:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 02:07:09,936 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 [2022-07-13 02:07:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:09,947 INFO L225 Difference]: With dead ends: 6143 [2022-07-13 02:07:09,948 INFO L226 Difference]: Without dead ends: 3527 [2022-07-13 02:07:09,956 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 [2022-07-13 02:07:09,957 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 236 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:09,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 690 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:07:09,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2022-07-13 02:07:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 2885. [2022-07-13 02:07:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2284 states have (on average 1.160245183887916) internal successors, (2650), 2251 states have internal predecessors, (2650), 435 states have call successors, (435), 135 states have call predecessors, (435), 159 states have return successors, (832), 498 states have call predecessors, (832), 435 states have call successors, (832) [2022-07-13 02:07:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3917 transitions. [2022-07-13 02:07:10,159 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3917 transitions. Word has length 327 [2022-07-13 02:07:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:10,160 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 3917 transitions. [2022-07-13 02:07:10,160 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) [2022-07-13 02:07:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3917 transitions. [2022-07-13 02:07:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-13 02:07:10,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:10,162 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] [2022-07-13 02:07:10,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-07-13 02:07:10,386 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 [2022-07-13 02:07:10,386 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:10,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1655823117, now seen corresponding path program 12 times [2022-07-13 02:07:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996438194] [2022-07-13 02:07:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:10,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:10,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302884695] [2022-07-13 02:07:10,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:07:10,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:10,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:10,398 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) [2022-07-13 02:07:10,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-07-13 02:07:10,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-13 02:07:10,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:10,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 02:07:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2846 backedges. 906 proven. 91 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2022-07-13 02:07:10,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2846 backedges. 906 proven. 119 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2022-07-13 02:07:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:11,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996438194] [2022-07-13 02:07:11,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:11,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302884695] [2022-07-13 02:07:11,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302884695] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:11,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:11,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 32 [2022-07-13 02:07:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460152377] [2022-07-13 02:07:11,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-13 02:07:11,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-13 02:07:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2022-07-13 02:07:11,895 INFO L87 Difference]: Start difference. First operand 2885 states and 3917 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) [2022-07-13 02:07:13,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:13,577 INFO L93 Difference]: Finished difference Result 6408 states and 9020 transitions. [2022-07-13 02:07:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-13 02:07:13,579 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 [2022-07-13 02:07:13,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:13,589 INFO L225 Difference]: With dead ends: 6408 [2022-07-13 02:07:13,589 INFO L226 Difference]: Without dead ends: 3733 [2022-07-13 02:07:13,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=495, Invalid=2697, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:07:13,597 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 288 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:13,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 996 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 02:07:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2022-07-13 02:07:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3464. [2022-07-13 02:07:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3464 states, 2737 states have (on average 1.1541834124954329) internal successors, (3159), 2681 states have internal predecessors, (3159), 517 states have call successors, (517), 155 states have call predecessors, (517), 203 states have return successors, (1002), 627 states have call predecessors, (1002), 517 states have call successors, (1002) [2022-07-13 02:07:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 4678 transitions. [2022-07-13 02:07:13,772 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 4678 transitions. Word has length 327 [2022-07-13 02:07:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:13,772 INFO L495 AbstractCegarLoop]: Abstraction has 3464 states and 4678 transitions. [2022-07-13 02:07:13,773 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) [2022-07-13 02:07:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 4678 transitions. [2022-07-13 02:07:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2022-07-13 02:07:13,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:13,775 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] [2022-07-13 02:07:13,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:13,991 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 [2022-07-13 02:07:13,991 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1060225436, now seen corresponding path program 2 times [2022-07-13 02:07:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788564599] [2022-07-13 02:07:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:14,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:14,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612016650] [2022-07-13 02:07:14,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:14,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:14,002 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) [2022-07-13 02:07:14,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-07-13 02:07:14,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:07:14,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:14,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:07:14,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2022-07-13 02:07:14,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:07:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788564599] [2022-07-13 02:07:14,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:14,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612016650] [2022-07-13 02:07:14,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612016650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:07:14,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:07:14,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:07:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33228713] [2022-07-13 02:07:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:07:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:07:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:07:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:07:14,126 INFO L87 Difference]: Start difference. First operand 3464 states and 4678 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) [2022-07-13 02:07:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:14,320 INFO L93 Difference]: Finished difference Result 3466 states and 4678 transitions. [2022-07-13 02:07:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 02:07:14,322 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 [2022-07-13 02:07:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:14,330 INFO L225 Difference]: With dead ends: 3466 [2022-07-13 02:07:14,330 INFO L226 Difference]: Without dead ends: 3462 [2022-07-13 02:07:14,331 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 [2022-07-13 02:07:14,332 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:14,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 222 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-07-13 02:07:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3458. [2022-07-13 02:07:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2733 states have (on average 1.1361141602634468) internal successors, (3105), 2677 states have internal predecessors, (3105), 516 states have call successors, (516), 155 states have call predecessors, (516), 203 states have return successors, (1000), 625 states have call predecessors, (1000), 516 states have call successors, (1000) [2022-07-13 02:07:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4621 transitions. [2022-07-13 02:07:14,496 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4621 transitions. Word has length 328 [2022-07-13 02:07:14,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:14,496 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4621 transitions. [2022-07-13 02:07:14,496 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) [2022-07-13 02:07:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4621 transitions. [2022-07-13 02:07:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-13 02:07:14,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:14,499 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] [2022-07-13 02:07:14,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:14,722 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 [2022-07-13 02:07:14,722 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:14,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1120343315, now seen corresponding path program 13 times [2022-07-13 02:07:14,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:14,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532813295] [2022-07-13 02:07:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:14,733 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:14,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729943104] [2022-07-13 02:07:14,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:07:14,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:14,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:14,735 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) [2022-07-13 02:07:14,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-07-13 02:07:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:14,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 02:07:14,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 1746 proven. 21 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2022-07-13 02:07:15,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3602 backedges. 724 proven. 202 refuted. 0 times theorem prover too weak. 2676 trivial. 0 not checked. [2022-07-13 02:07:15,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532813295] [2022-07-13 02:07:15,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:15,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729943104] [2022-07-13 02:07:15,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729943104] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:15,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:15,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 22 [2022-07-13 02:07:15,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879800678] [2022-07-13 02:07:15,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:15,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 02:07:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 02:07:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:07:15,787 INFO L87 Difference]: Start difference. First operand 3458 states and 4621 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) [2022-07-13 02:07:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:16,590 INFO L93 Difference]: Finished difference Result 6723 states and 9218 transitions. [2022-07-13 02:07:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 02:07:16,592 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 [2022-07-13 02:07:16,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:16,598 INFO L225 Difference]: With dead ends: 6723 [2022-07-13 02:07:16,598 INFO L226 Difference]: Without dead ends: 3414 [2022-07-13 02:07:16,605 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 [2022-07-13 02:07:16,606 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 137 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:16,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 718 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:07:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-07-13 02:07:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3330. [2022-07-13 02:07:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3330 states, 2638 states have (on average 1.136467020470053) internal successors, (2998), 2591 states have internal predecessors, (2998), 492 states have call successors, (492), 149 states have call predecessors, (492), 194 states have return successors, (890), 589 states have call predecessors, (890), 492 states have call successors, (890) [2022-07-13 02:07:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 4380 transitions. [2022-07-13 02:07:16,754 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 4380 transitions. Word has length 361 [2022-07-13 02:07:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:16,755 INFO L495 AbstractCegarLoop]: Abstraction has 3330 states and 4380 transitions. [2022-07-13 02:07:16,755 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) [2022-07-13 02:07:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 4380 transitions. [2022-07-13 02:07:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-07-13 02:07:16,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:16,758 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] [2022-07-13 02:07:16,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:16,973 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 [2022-07-13 02:07:16,973 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash 319395959, now seen corresponding path program 3 times [2022-07-13 02:07:16,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:16,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297783533] [2022-07-13 02:07:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:16,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:16,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:16,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188989236] [2022-07-13 02:07:16,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:07:16,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:16,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:16,986 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) [2022-07-13 02:07:16,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-07-13 02:07:17,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-13 02:07:17,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:17,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:07:17,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2807 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 2551 trivial. 0 not checked. [2022-07-13 02:07:17,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297783533] [2022-07-13 02:07:19,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188989236] [2022-07-13 02:07:19,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188989236] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:19,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:07:19,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-13 02:07:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093844470] [2022-07-13 02:07:19,837 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 02:07:19,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:19,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 02:07:19,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2022-07-13 02:07:19,837 INFO L87 Difference]: Start difference. First operand 3330 states and 4380 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) [2022-07-13 02:07:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:20,231 INFO L93 Difference]: Finished difference Result 3560 states and 4661 transitions. [2022-07-13 02:07:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 02:07:20,233 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 [2022-07-13 02:07:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:20,243 INFO L225 Difference]: With dead ends: 3560 [2022-07-13 02:07:20,243 INFO L226 Difference]: Without dead ends: 3544 [2022-07-13 02:07:20,246 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 [2022-07-13 02:07:20,246 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:20,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 198 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:07:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2022-07-13 02:07:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3262. [2022-07-13 02:07:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3262 states, 2574 states have (on average 1.1285936285936287) internal successors, (2905), 2554 states have internal predecessors, (2905), 490 states have call successors, (490), 148 states have call predecessors, (490), 192 states have return successors, (891), 559 states have call predecessors, (891), 490 states have call successors, (891) [2022-07-13 02:07:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4286 transitions. [2022-07-13 02:07:20,456 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4286 transitions. Word has length 345 [2022-07-13 02:07:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:20,457 INFO L495 AbstractCegarLoop]: Abstraction has 3262 states and 4286 transitions. [2022-07-13 02:07:20,457 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) [2022-07-13 02:07:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4286 transitions. [2022-07-13 02:07:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-13 02:07:20,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:20,460 INFO L195 NwaCegarLoop]: trace histogram [36, 35, 21, 21, 21, 21, 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] [2022-07-13 02:07:20,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-07-13 02:07:20,683 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 [2022-07-13 02:07:20,683 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1643293171, now seen corresponding path program 14 times [2022-07-13 02:07:20,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:20,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947982218] [2022-07-13 02:07:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:20,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184229046] [2022-07-13 02:07:20,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:07:20,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:20,696 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) [2022-07-13 02:07:20,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-07-13 02:07:20,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:07:20,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:20,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 02:07:20,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3859 backedges. 962 proven. 82 refuted. 0 times theorem prover too weak. 2815 trivial. 0 not checked. [2022-07-13 02:07:21,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3859 backedges. 962 proven. 97 refuted. 0 times theorem prover too weak. 2800 trivial. 0 not checked. [2022-07-13 02:07:22,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:22,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947982218] [2022-07-13 02:07:22,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:07:22,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184229046] [2022-07-13 02:07:22,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184229046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:22,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:07:22,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 36 [2022-07-13 02:07:22,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411508707] [2022-07-13 02:07:22,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:22,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-13 02:07:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-13 02:07:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1103, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 02:07:22,289 INFO L87 Difference]: Start difference. First operand 3262 states and 4286 transitions. Second operand has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 33 states have internal predecessors, (131), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-13 02:07:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:24,073 INFO L93 Difference]: Finished difference Result 6630 states and 8854 transitions. [2022-07-13 02:07:24,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 02:07:24,075 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 33 states have internal predecessors, (131), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) Word has length 371 [2022-07-13 02:07:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:24,086 INFO L225 Difference]: With dead ends: 6630 [2022-07-13 02:07:24,087 INFO L226 Difference]: Without dead ends: 3584 [2022-07-13 02:07:24,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=3064, Unknown=0, NotChecked=0, Total=3540 [2022-07-13 02:07:24,095 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 211 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:24,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 824 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 02:07:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2022-07-13 02:07:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3471. [2022-07-13 02:07:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 2742 states have (on average 1.12618526622903) internal successors, (3088), 2714 states have internal predecessors, (3088), 515 states have call successors, (515), 158 states have call predecessors, (515), 208 states have return successors, (934), 598 states have call predecessors, (934), 515 states have call successors, (934) [2022-07-13 02:07:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 4537 transitions. [2022-07-13 02:07:24,279 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 4537 transitions. Word has length 371 [2022-07-13 02:07:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:24,280 INFO L495 AbstractCegarLoop]: Abstraction has 3471 states and 4537 transitions. [2022-07-13 02:07:24,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.638888888888889) internal successors, (131), 33 states have internal predecessors, (131), 19 states have call successors, (26), 4 states have call predecessors, (26), 5 states have return successors, (24), 16 states have call predecessors, (24), 17 states have call successors, (24) [2022-07-13 02:07:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 4537 transitions. [2022-07-13 02:07:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-13 02:07:24,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:24,283 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 24, 24, 24, 24, 24, 24, 23, 23, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:07:24,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:24,483 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 [2022-07-13 02:07:24,483 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:07:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1765578227, now seen corresponding path program 15 times [2022-07-13 02:07:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:24,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770156498] [2022-07-13 02:07:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:24,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:07:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824117702] [2022-07-13 02:07:24,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:07:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:24,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:24,500 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) [2022-07-13 02:07:24,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-07-13 02:07:24,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-13 02:07:24,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:07:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 02:07:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4911 backedges. 1078 proven. 37 refuted. 9 times theorem prover too weak. 3787 trivial. 0 not checked. [2022-07-13 02:08:21,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:23,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770156498] [2022-07-13 02:08:23,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:23,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824117702] [2022-07-13 02:08:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824117702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:08:23,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:08:23,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-07-13 02:08:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066309467] [2022-07-13 02:08:23,424 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:23,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:08:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:08:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=178, Unknown=19, NotChecked=0, Total=272 [2022-07-13 02:08:23,425 INFO L87 Difference]: Start difference. First operand 3471 states and 4537 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 02:08:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:47,233 INFO L93 Difference]: Finished difference Result 3615 states and 4891 transitions. [2022-07-13 02:08:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:08:47,235 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) Word has length 421 [2022-07-13 02:08:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:47,247 INFO L225 Difference]: With dead ends: 3615 [2022-07-13 02:08:47,247 INFO L226 Difference]: Without dead ends: 3614 [2022-07-13 02:08:47,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 80.2s TimeCoverageRelationStatistics Valid=113, Invalid=284, Unknown=23, NotChecked=0, Total=420 [2022-07-13 02:08:47,251 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 45 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:47,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 247 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 96 Unchecked, 0.1s Time] [2022-07-13 02:08:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2022-07-13 02:08:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3492. [2022-07-13 02:08:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 2758 states have (on average 1.1247280638143582) internal successors, (3102), 2732 states have internal predecessors, (3102), 515 states have call successors, (515), 158 states have call predecessors, (515), 213 states have return successors, (948), 601 states have call predecessors, (948), 515 states have call successors, (948) [2022-07-13 02:08:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 4565 transitions. [2022-07-13 02:08:47,417 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 4565 transitions. Word has length 421 [2022-07-13 02:08:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:47,418 INFO L495 AbstractCegarLoop]: Abstraction has 3492 states and 4565 transitions. [2022-07-13 02:08:47,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (11), 6 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 02:08:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 4565 transitions. [2022-07-13 02:08:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-13 02:08:47,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:47,421 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 21, 14, 14, 14, 14, 14, 14, 14, 14, 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] [2022-07-13 02:08:47,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-07-13 02:08:47,621 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 [2022-07-13 02:08:47,621 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:08:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:47,622 INFO L85 PathProgramCache]: Analyzing trace with hash -96365547, now seen corresponding path program 1 times [2022-07-13 02:08:47,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:47,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348205221] [2022-07-13 02:08:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:47,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:47,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712726449] [2022-07-13 02:08:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:47,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:47,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:47,632 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) [2022-07-13 02:08:47,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-07-13 02:08:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:47,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:08:47,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 936 proven. 6 refuted. 0 times theorem prover too weak. 2456 trivial. 0 not checked. [2022-07-13 02:08:48,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 272 proven. 32 refuted. 0 times theorem prover too weak. 3094 trivial. 0 not checked. [2022-07-13 02:08:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:48,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348205221] [2022-07-13 02:08:48,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:48,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712726449] [2022-07-13 02:08:48,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712726449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:48,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:08:48,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-07-13 02:08:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746625886] [2022-07-13 02:08:48,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:08:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:08:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:08:48,547 INFO L87 Difference]: Start difference. First operand 3492 states and 4565 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-13 02:08:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:49,053 INFO L93 Difference]: Finished difference Result 6757 states and 8897 transitions. [2022-07-13 02:08:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:08:49,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 396 [2022-07-13 02:08:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:49,062 INFO L225 Difference]: With dead ends: 6757 [2022-07-13 02:08:49,062 INFO L226 Difference]: Without dead ends: 3213 [2022-07-13 02:08:49,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 780 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:08:49,068 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 75 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:49,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 204 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:08:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-07-13 02:08:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3100. [2022-07-13 02:08:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2442 states have (on average 1.1298116298116299) internal successors, (2759), 2417 states have internal predecessors, (2759), 460 states have call successors, (460), 154 states have call predecessors, (460), 192 states have return successors, (792), 528 states have call predecessors, (792), 459 states have call successors, (792) [2022-07-13 02:08:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4011 transitions. [2022-07-13 02:08:49,220 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4011 transitions. Word has length 396 [2022-07-13 02:08:49,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:49,220 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 4011 transitions. [2022-07-13 02:08:49,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 7 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-13 02:08:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4011 transitions. [2022-07-13 02:08:49,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-13 02:08:49,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:49,223 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 21, 14, 14, 14, 14, 14, 14, 14, 14, 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] [2022-07-13 02:08:49,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-07-13 02:08:49,424 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 [2022-07-13 02:08:49,424 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:08:49,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash 777651285, now seen corresponding path program 2 times [2022-07-13 02:08:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:49,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926634926] [2022-07-13 02:08:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:49,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:49,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343543809] [2022-07-13 02:08:49,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:08:49,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:49,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:49,434 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) [2022-07-13 02:08:49,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-07-13 02:08:49,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:08:49,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:49,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:08:49,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2022-07-13 02:08:49,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3398 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3266 trivial. 0 not checked. [2022-07-13 02:08:50,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926634926] [2022-07-13 02:08:50,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343543809] [2022-07-13 02:08:50,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343543809] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:50,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:08:50,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-07-13 02:08:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815167765] [2022-07-13 02:08:50,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 02:08:50,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 02:08:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:08:50,275 INFO L87 Difference]: Start difference. First operand 3100 states and 4011 transitions. Second operand has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-13 02:08:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:52,572 INFO L93 Difference]: Finished difference Result 4266 states and 5732 transitions. [2022-07-13 02:08:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 02:08:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 396 [2022-07-13 02:08:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:52,582 INFO L225 Difference]: With dead ends: 4266 [2022-07-13 02:08:52,583 INFO L226 Difference]: Without dead ends: 4241 [2022-07-13 02:08:52,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1509, Invalid=5463, Unknown=0, NotChecked=0, Total=6972 [2022-07-13 02:08:52,585 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 196 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:52,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 622 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 02:08:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-07-13 02:08:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2992. [2022-07-13 02:08:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2348 states have (on average 1.0979557069846677) internal successors, (2578), 2339 states have internal predecessors, (2578), 447 states have call successors, (447), 154 states have call predecessors, (447), 192 states have return successors, (762), 498 states have call predecessors, (762), 443 states have call successors, (762) [2022-07-13 02:08:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 3787 transitions. [2022-07-13 02:08:52,749 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 3787 transitions. Word has length 396 [2022-07-13 02:08:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:52,749 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 3787 transitions. [2022-07-13 02:08:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-13 02:08:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 3787 transitions. [2022-07-13 02:08:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-07-13 02:08:52,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:52,753 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] [2022-07-13 02:08:52,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-07-13 02:08:52,953 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 [2022-07-13 02:08:52,953 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:08:52,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:52,954 INFO L85 PathProgramCache]: Analyzing trace with hash -912980599, now seen corresponding path program 7 times [2022-07-13 02:08:52,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:52,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142416004] [2022-07-13 02:08:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:52,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:52,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:52,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655941926] [2022-07-13 02:08:52,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:08:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:52,964 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) [2022-07-13 02:08:52,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-07-13 02:08:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:08:53,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:08:53,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 1489 proven. 46 refuted. 0 times theorem prover too weak. 2571 trivial. 0 not checked. [2022-07-13 02:08:53,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4106 backedges. 365 proven. 91 refuted. 0 times theorem prover too weak. 3650 trivial. 0 not checked. [2022-07-13 02:08:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142416004] [2022-07-13 02:08:54,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655941926] [2022-07-13 02:08:54,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655941926] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:54,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:08:54,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2022-07-13 02:08:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764260083] [2022-07-13 02:08:54,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 02:08:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 02:08:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:08:54,981 INFO L87 Difference]: Start difference. First operand 2992 states and 3787 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) [2022-07-13 02:08:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:56,978 INFO L93 Difference]: Finished difference Result 5856 states and 7400 transitions. [2022-07-13 02:08:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 02:08:56,980 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 [2022-07-13 02:08:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:56,986 INFO L225 Difference]: With dead ends: 5856 [2022-07-13 02:08:56,986 INFO L226 Difference]: Without dead ends: 2979 [2022-07-13 02:08:56,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 808 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 02:08:56,990 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 115 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:56,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 245 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 02:08:56,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-07-13 02:08:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2863. [2022-07-13 02:08:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2284 states have (on average 1.0661120840630474) internal successors, (2435), 2243 states have internal predecessors, (2435), 370 states have call successors, (370), 140 states have call predecessors, (370), 204 states have return successors, (711), 479 states have call predecessors, (711), 366 states have call successors, (711) [2022-07-13 02:08:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3516 transitions. [2022-07-13 02:08:57,127 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 3516 transitions. Word has length 415 [2022-07-13 02:08:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:57,127 INFO L495 AbstractCegarLoop]: Abstraction has 2863 states and 3516 transitions. [2022-07-13 02:08:57,128 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) [2022-07-13 02:08:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 3516 transitions. [2022-07-13 02:08:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-07-13 02:08:57,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:57,131 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] [2022-07-13 02:08:57,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:57,334 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 [2022-07-13 02:08:57,334 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:08:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 797955593, now seen corresponding path program 8 times [2022-07-13 02:08:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:57,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412509952] [2022-07-13 02:08:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:57,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:57,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090244194] [2022-07-13 02:08:57,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:08:57,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:57,345 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) [2022-07-13 02:08:57,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-07-13 02:08:57,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:08:57,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:57,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:08:57,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 1627 proven. 83 refuted. 0 times theorem prover too weak. 2940 trivial. 0 not checked. [2022-07-13 02:08:57,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:08:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 383 proven. 164 refuted. 0 times theorem prover too weak. 4103 trivial. 0 not checked. [2022-07-13 02:08:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:08:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412509952] [2022-07-13 02:08:58,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:08:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090244194] [2022-07-13 02:08:58,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090244194] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:08:58,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:08:58,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2022-07-13 02:08:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155872523] [2022-07-13 02:08:58,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:08:58,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:08:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:08:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:08:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:08:58,121 INFO L87 Difference]: Start difference. First operand 2863 states and 3516 transitions. Second operand has 15 states, 14 states have (on average 5.285714285714286) internal successors, (74), 11 states have internal predecessors, (74), 8 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:08:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:08:58,843 INFO L93 Difference]: Finished difference Result 5568 states and 6924 transitions. [2022-07-13 02:08:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 02:08:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.285714285714286) internal successors, (74), 11 states have internal predecessors, (74), 8 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 435 [2022-07-13 02:08:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:08:58,852 INFO L225 Difference]: With dead ends: 5568 [2022-07-13 02:08:58,852 INFO L226 Difference]: Without dead ends: 3287 [2022-07-13 02:08:58,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:08:58,855 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:08:58,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 382 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:08:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2022-07-13 02:08:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2937. [2022-07-13 02:08:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2340 states have (on average 1.0653846153846154) internal successors, (2493), 2301 states have internal predecessors, (2493), 379 states have call successors, (379), 144 states have call predecessors, (379), 213 states have return successors, (720), 491 states have call predecessors, (720), 375 states have call successors, (720) [2022-07-13 02:08:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3592 transitions. [2022-07-13 02:08:58,986 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3592 transitions. Word has length 435 [2022-07-13 02:08:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:08:58,987 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 3592 transitions. [2022-07-13 02:08:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.285714285714286) internal successors, (74), 11 states have internal predecessors, (74), 8 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:08:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3592 transitions. [2022-07-13 02:08:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-13 02:08:58,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:08:58,990 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] [2022-07-13 02:08:59,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-07-13 02:08:59,198 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 [2022-07-13 02:08:59,199 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:08:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:08:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1519346685, now seen corresponding path program 4 times [2022-07-13 02:08:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:08:59,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667771052] [2022-07-13 02:08:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:08:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:08:59,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:08:59,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285430238] [2022-07-13 02:08:59,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:08:59,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:08:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:08:59,211 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) [2022-07-13 02:08:59,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-07-13 02:08:59,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:08:59,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:08:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:08:59,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:08:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 1057 proven. 257 refuted. 0 times theorem prover too weak. 3227 trivial. 0 not checked. [2022-07-13 02:08:59,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4541 backedges. 1057 proven. 265 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2022-07-13 02:09:01,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:01,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667771052] [2022-07-13 02:09:01,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:01,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285430238] [2022-07-13 02:09:01,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285430238] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:01,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:01,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 22 [2022-07-13 02:09:01,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105385445] [2022-07-13 02:09:01,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:01,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 02:09:01,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 02:09:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:09:01,679 INFO L87 Difference]: Start difference. First operand 2937 states and 3592 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) [2022-07-13 02:09:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:04,349 INFO L93 Difference]: Finished difference Result 3452 states and 4215 transitions. [2022-07-13 02:09:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 02:09:04,352 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 [2022-07-13 02:09:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:04,357 INFO L225 Difference]: With dead ends: 3452 [2022-07-13 02:09:04,357 INFO L226 Difference]: Without dead ends: 3355 [2022-07-13 02:09:04,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 839 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=258, Invalid=1302, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 02:09:04,358 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 170 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:04,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1032 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 02:09:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2022-07-13 02:09:04,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3051. [2022-07-13 02:09:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2429 states have (on average 1.0662824207492796) internal successors, (2590), 2386 states have internal predecessors, (2590), 399 states have call successors, (399), 150 states have call predecessors, (399), 218 states have return successors, (742), 514 states have call predecessors, (742), 394 states have call successors, (742) [2022-07-13 02:09:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 3731 transitions. [2022-07-13 02:09:04,490 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 3731 transitions. Word has length 429 [2022-07-13 02:09:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:04,491 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 3731 transitions. [2022-07-13 02:09:04,491 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) [2022-07-13 02:09:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 3731 transitions. [2022-07-13 02:09:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-07-13 02:09:04,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:04,494 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 21, 20, 20, 20, 20, 20, 20, 20, 20, 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] [2022-07-13 02:09:04,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:04,694 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 [2022-07-13 02:09:04,694 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:04,695 INFO L85 PathProgramCache]: Analyzing trace with hash -311379555, now seen corresponding path program 5 times [2022-07-13 02:09:04,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:04,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659741891] [2022-07-13 02:09:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:04,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475015487] [2022-07-13 02:09:04,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:09:04,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:04,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:04,705 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) [2022-07-13 02:09:04,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-07-13 02:09:04,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-07-13 02:09:04,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:04,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 02:09:04,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4815 backedges. 2003 proven. 448 refuted. 0 times theorem prover too weak. 2364 trivial. 0 not checked. [2022-07-13 02:09:06,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4815 backedges. 341 proven. 636 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2022-07-13 02:09:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:08,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659741891] [2022-07-13 02:09:08,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:08,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475015487] [2022-07-13 02:09:08,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475015487] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:08,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:08,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28] total 40 [2022-07-13 02:09:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457756737] [2022-07-13 02:09:08,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:08,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 02:09:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 02:09:08,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 02:09:08,764 INFO L87 Difference]: Start difference. First operand 3051 states and 3731 transitions. Second operand has 40 states, 38 states have (on average 4.105263157894737) internal successors, (156), 40 states have internal predecessors, (156), 19 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (34), 19 states have call predecessors, (34), 19 states have call successors, (34) [2022-07-13 02:09:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:13,970 INFO L93 Difference]: Finished difference Result 6125 states and 7668 transitions. [2022-07-13 02:09:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 02:09:13,974 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 4.105263157894737) internal successors, (156), 40 states have internal predecessors, (156), 19 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (34), 19 states have call predecessors, (34), 19 states have call successors, (34) Word has length 439 [2022-07-13 02:09:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:13,981 INFO L225 Difference]: With dead ends: 6125 [2022-07-13 02:09:13,981 INFO L226 Difference]: Without dead ends: 3455 [2022-07-13 02:09:13,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 844 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=499, Invalid=4331, Unknown=0, NotChecked=0, Total=4830 [2022-07-13 02:09:13,986 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 310 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:13,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 960 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2603 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 02:09:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2022-07-13 02:09:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3294. [2022-07-13 02:09:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 2627 states have (on average 1.0639512752188809) internal successors, (2795), 2586 states have internal predecessors, (2795), 438 states have call successors, (438), 153 states have call predecessors, (438), 224 states have return successors, (817), 554 states have call predecessors, (817), 428 states have call successors, (817) [2022-07-13 02:09:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4050 transitions. [2022-07-13 02:09:14,166 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4050 transitions. Word has length 439 [2022-07-13 02:09:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:14,166 INFO L495 AbstractCegarLoop]: Abstraction has 3294 states and 4050 transitions. [2022-07-13 02:09:14,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 4.105263157894737) internal successors, (156), 40 states have internal predecessors, (156), 19 states have call successors, (34), 2 states have call predecessors, (34), 7 states have return successors, (34), 19 states have call predecessors, (34), 19 states have call successors, (34) [2022-07-13 02:09:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4050 transitions. [2022-07-13 02:09:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-07-13 02:09:14,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:14,170 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 27, 27, 27, 27, 27, 27, 27, 27, 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] [2022-07-13 02:09:14,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:14,371 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 [2022-07-13 02:09:14,371 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1276928041, now seen corresponding path program 6 times [2022-07-13 02:09:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:14,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599399237] [2022-07-13 02:09:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:14,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:14,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841154204] [2022-07-13 02:09:14,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:09:14,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:14,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:14,386 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) [2022-07-13 02:09:14,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-07-13 02:09:14,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-07-13 02:09:14,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:14,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 02:09:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7741 backedges. 1032 proven. 33 refuted. 0 times theorem prover too weak. 6676 trivial. 0 not checked. [2022-07-13 02:09:15,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7741 backedges. 947 proven. 124 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2022-07-13 02:09:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:16,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599399237] [2022-07-13 02:09:16,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:16,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841154204] [2022-07-13 02:09:16,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841154204] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:16,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:16,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 30 [2022-07-13 02:09:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076488970] [2022-07-13 02:09:16,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 02:09:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 02:09:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2022-07-13 02:09:16,789 INFO L87 Difference]: Start difference. First operand 3294 states and 4050 transitions. Second operand has 30 states, 30 states have (on average 4.0) internal successors, (120), 28 states have internal predecessors, (120), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2022-07-13 02:09:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:20,745 INFO L93 Difference]: Finished difference Result 6085 states and 7580 transitions. [2022-07-13 02:09:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-13 02:09:20,749 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.0) internal successors, (120), 28 states have internal predecessors, (120), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) Word has length 543 [2022-07-13 02:09:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:20,759 INFO L225 Difference]: With dead ends: 6085 [2022-07-13 02:09:20,760 INFO L226 Difference]: Without dead ends: 3322 [2022-07-13 02:09:20,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1059 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=504, Invalid=2802, Unknown=0, NotChecked=0, Total=3306 [2022-07-13 02:09:20,768 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 141 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 878 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 02:09:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2022-07-13 02:09:20,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3291. [2022-07-13 02:09:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2620 states have (on average 1.0622137404580152) internal successors, (2783), 2570 states have internal predecessors, (2783), 440 states have call successors, (440), 156 states have call predecessors, (440), 226 states have return successors, (820), 564 states have call predecessors, (820), 433 states have call successors, (820) [2022-07-13 02:09:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4043 transitions. [2022-07-13 02:09:20,958 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4043 transitions. Word has length 543 [2022-07-13 02:09:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 4043 transitions. [2022-07-13 02:09:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.0) internal successors, (120), 28 states have internal predecessors, (120), 16 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 14 states have call predecessors, (23), 14 states have call successors, (23) [2022-07-13 02:09:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4043 transitions. [2022-07-13 02:09:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-07-13 02:09:20,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:20,962 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] [2022-07-13 02:09:20,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-07-13 02:09:21,163 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 [2022-07-13 02:09:21,163 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash 727114295, now seen corresponding path program 7 times [2022-07-13 02:09:21,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:21,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139815288] [2022-07-13 02:09:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:21,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:21,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:21,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619873464] [2022-07-13 02:09:21,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:09:21,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:21,179 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) [2022-07-13 02:09:21,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-07-13 02:09:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:21,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 02:09:21,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 433 proven. 116 refuted. 0 times theorem prover too weak. 6836 trivial. 0 not checked. [2022-07-13 02:09:21,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:22,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139815288] [2022-07-13 02:09:22,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:22,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619873464] [2022-07-13 02:09:22,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619873464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:22,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:09:22,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-07-13 02:09:22,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125005091] [2022-07-13 02:09:22,090 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:22,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 02:09:22,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:22,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 02:09:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:09:22,091 INFO L87 Difference]: Start difference. First operand 3291 states and 4043 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 02:09:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:23,020 INFO L93 Difference]: Finished difference Result 3377 states and 4147 transitions. [2022-07-13 02:09:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 02:09:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 533 [2022-07-13 02:09:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:23,029 INFO L225 Difference]: With dead ends: 3377 [2022-07-13 02:09:23,029 INFO L226 Difference]: Without dead ends: 3376 [2022-07-13 02:09:23,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-07-13 02:09:23,030 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 56 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:23,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 415 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:09:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2022-07-13 02:09:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 2852. [2022-07-13 02:09:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2264 states have (on average 1.0574204946996466) internal successors, (2394), 2227 states have internal predecessors, (2394), 375 states have call successors, (375), 144 states have call predecessors, (375), 208 states have return successors, (694), 480 states have call predecessors, (694), 369 states have call successors, (694) [2022-07-13 02:09:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 3463 transitions. [2022-07-13 02:09:23,169 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 3463 transitions. Word has length 533 [2022-07-13 02:09:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:23,170 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 3463 transitions. [2022-07-13 02:09:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-13 02:09:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 3463 transitions. [2022-07-13 02:09:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-07-13 02:09:23,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:23,174 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 29, 29, 29, 29, 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] [2022-07-13 02:09:23,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:23,374 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 [2022-07-13 02:09:23,375 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:23,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:23,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1644454119, now seen corresponding path program 16 times [2022-07-13 02:09:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:23,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211621975] [2022-07-13 02:09:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:23,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:23,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281980062] [2022-07-13 02:09:23,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:09:23,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:23,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:23,387 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) [2022-07-13 02:09:23,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-07-13 02:09:23,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:09:23,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:23,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 02:09:23,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6906 backedges. 4058 proven. 315 refuted. 0 times theorem prover too weak. 2533 trivial. 0 not checked. [2022-07-13 02:09:24,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6906 backedges. 1442 proven. 1077 refuted. 0 times theorem prover too weak. 4387 trivial. 0 not checked. [2022-07-13 02:09:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:29,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211621975] [2022-07-13 02:09:29,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281980062] [2022-07-13 02:09:29,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281980062] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:29,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:29,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 29 [2022-07-13 02:09:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788822953] [2022-07-13 02:09:29,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:29,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 02:09:29,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:29,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 02:09:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2022-07-13 02:09:29,010 INFO L87 Difference]: Start difference. First operand 2852 states and 3463 transitions. Second operand has 29 states, 25 states have (on average 6.08) internal successors, (152), 29 states have internal predecessors, (152), 19 states have call successors, (33), 2 states have call predecessors, (33), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-07-13 02:09:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:32,297 INFO L93 Difference]: Finished difference Result 5882 states and 7334 transitions. [2022-07-13 02:09:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 02:09:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 6.08) internal successors, (152), 29 states have internal predecessors, (152), 19 states have call successors, (33), 2 states have call predecessors, (33), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 485 [2022-07-13 02:09:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:32,308 INFO L225 Difference]: With dead ends: 5882 [2022-07-13 02:09:32,308 INFO L226 Difference]: Without dead ends: 3140 [2022-07-13 02:09:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=318, Invalid=1662, Unknown=0, NotChecked=0, Total=1980 [2022-07-13 02:09:32,312 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 286 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:32,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 874 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 02:09:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2022-07-13 02:09:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2895. [2022-07-13 02:09:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2305 states have (on average 1.054229934924078) internal successors, (2430), 2267 states have internal predecessors, (2430), 373 states have call successors, (373), 139 states have call predecessors, (373), 212 states have return successors, (737), 488 states have call predecessors, (737), 366 states have call successors, (737) [2022-07-13 02:09:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 3540 transitions. [2022-07-13 02:09:32,464 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 3540 transitions. Word has length 485 [2022-07-13 02:09:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:32,464 INFO L495 AbstractCegarLoop]: Abstraction has 2895 states and 3540 transitions. [2022-07-13 02:09:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 6.08) internal successors, (152), 29 states have internal predecessors, (152), 19 states have call successors, (33), 2 states have call predecessors, (33), 12 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-07-13 02:09:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 3540 transitions. [2022-07-13 02:09:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-07-13 02:09:32,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:32,467 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 30, 30, 30, 30, 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] [2022-07-13 02:09:32,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-07-13 02:09:32,667 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 [2022-07-13 02:09:32,668 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:32,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1285919623, now seen corresponding path program 17 times [2022-07-13 02:09:32,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:32,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144169066] [2022-07-13 02:09:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:32,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:32,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:32,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389482506] [2022-07-13 02:09:32,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:09:32,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:32,678 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) [2022-07-13 02:09:32,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-07-13 02:09:32,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-07-13 02:09:32,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 02:09:32,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7265 backedges. 1670 proven. 657 refuted. 0 times theorem prover too weak. 4938 trivial. 0 not checked. [2022-07-13 02:09:34,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7265 backedges. 1663 proven. 567 refuted. 0 times theorem prover too weak. 5035 trivial. 0 not checked. [2022-07-13 02:09:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:38,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144169066] [2022-07-13 02:09:38,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:38,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389482506] [2022-07-13 02:09:38,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389482506] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:38,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:38,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31] total 36 [2022-07-13 02:09:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51079860] [2022-07-13 02:09:38,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-13 02:09:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-13 02:09:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 02:09:38,681 INFO L87 Difference]: Start difference. First operand 2895 states and 3540 transitions. Second operand has 36 states, 36 states have (on average 4.25) internal successors, (153), 34 states have internal predecessors, (153), 19 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-13 02:09:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:42,363 INFO L93 Difference]: Finished difference Result 6242 states and 7848 transitions. [2022-07-13 02:09:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 02:09:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.25) internal successors, (153), 34 states have internal predecessors, (153), 19 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) Word has length 495 [2022-07-13 02:09:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:42,376 INFO L225 Difference]: With dead ends: 6242 [2022-07-13 02:09:42,376 INFO L226 Difference]: Without dead ends: 3662 [2022-07-13 02:09:42,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=419, Invalid=2443, Unknown=0, NotChecked=0, Total=2862 [2022-07-13 02:09:42,382 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 182 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:42,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 796 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 02:09:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2022-07-13 02:09:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3322. [2022-07-13 02:09:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 2658 states have (on average 1.0594431903686983) internal successors, (2816), 2640 states have internal predecessors, (2816), 414 states have call successors, (414), 145 states have call predecessors, (414), 245 states have return successors, (833), 536 states have call predecessors, (833), 407 states have call successors, (833) [2022-07-13 02:09:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 4063 transitions. [2022-07-13 02:09:42,564 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 4063 transitions. Word has length 495 [2022-07-13 02:09:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:42,565 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 4063 transitions. [2022-07-13 02:09:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.25) internal successors, (153), 34 states have internal predecessors, (153), 19 states have call successors, (32), 3 states have call predecessors, (32), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-13 02:09:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 4063 transitions. [2022-07-13 02:09:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-13 02:09:42,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:42,568 INFO L195 NwaCegarLoop]: trace histogram [48, 45, 25, 25, 25, 25, 23, 23, 23, 22, 22, 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] [2022-07-13 02:09:42,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-07-13 02:09:42,768 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 [2022-07-13 02:09:42,769 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash 508283104, now seen corresponding path program 9 times [2022-07-13 02:09:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:42,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003616085] [2022-07-13 02:09:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:42,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:42,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821062378] [2022-07-13 02:09:42,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:09:42,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:42,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:42,781 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) [2022-07-13 02:09:42,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-07-13 02:09:42,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 02:09:42,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:09:42,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6380 backedges. 2066 proven. 1 refuted. 0 times theorem prover too weak. 4313 trivial. 0 not checked. [2022-07-13 02:09:43,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6380 backedges. 630 proven. 100 refuted. 0 times theorem prover too weak. 5650 trivial. 0 not checked. [2022-07-13 02:09:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003616085] [2022-07-13 02:09:43,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:43,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821062378] [2022-07-13 02:09:43,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821062378] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:43,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:43,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-07-13 02:09:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189592105] [2022-07-13 02:09:43,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:43,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:09:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:09:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:09:43,385 INFO L87 Difference]: Start difference. First operand 3322 states and 4063 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:09:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:44,042 INFO L93 Difference]: Finished difference Result 3875 states and 4697 transitions. [2022-07-13 02:09:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:09:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 505 [2022-07-13 02:09:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:44,054 INFO L225 Difference]: With dead ends: 3875 [2022-07-13 02:09:44,054 INFO L226 Difference]: Without dead ends: 3224 [2022-07-13 02:09:44,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 999 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:09:44,055 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:44,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 286 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:09:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2022-07-13 02:09:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3197. [2022-07-13 02:09:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 2558 states have (on average 1.060203283815481) internal successors, (2712), 2544 states have internal predecessors, (2712), 400 states have call successors, (400), 145 states have call predecessors, (400), 234 states have return successors, (752), 507 states have call predecessors, (752), 393 states have call successors, (752) [2022-07-13 02:09:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 3864 transitions. [2022-07-13 02:09:44,211 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 3864 transitions. Word has length 505 [2022-07-13 02:09:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:44,211 INFO L495 AbstractCegarLoop]: Abstraction has 3197 states and 3864 transitions. [2022-07-13 02:09:44,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:09:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 3864 transitions. [2022-07-13 02:09:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-07-13 02:09:44,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:44,215 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 25, 25, 25, 25, 25, 25, 24, 24, 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] [2022-07-13 02:09:44,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-07-13 02:09:44,415 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 [2022-07-13 02:09:44,415 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 597566336, now seen corresponding path program 10 times [2022-07-13 02:09:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:44,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033398152] [2022-07-13 02:09:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:44,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:44,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598082618] [2022-07-13 02:09:44,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:09:44,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:44,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:44,432 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) [2022-07-13 02:09:44,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-07-13 02:09:44,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:09:44,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:44,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:09:44,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6701 backedges. 3070 proven. 37 refuted. 0 times theorem prover too weak. 3594 trivial. 0 not checked. [2022-07-13 02:09:45,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6701 backedges. 1014 proven. 300 refuted. 0 times theorem prover too weak. 5387 trivial. 0 not checked. [2022-07-13 02:09:46,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:46,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033398152] [2022-07-13 02:09:46,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:46,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598082618] [2022-07-13 02:09:46,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598082618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:46,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:46,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 18 [2022-07-13 02:09:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926941811] [2022-07-13 02:09:46,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 02:09:46,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 02:09:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:09:46,649 INFO L87 Difference]: Start difference. First operand 3197 states and 3864 transitions. Second operand has 18 states, 16 states have (on average 6.9375) internal successors, (111), 18 states have internal predecessors, (111), 12 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2022-07-13 02:09:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:47,772 INFO L93 Difference]: Finished difference Result 5718 states and 6986 transitions. [2022-07-13 02:09:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:09:47,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 18 states have internal predecessors, (111), 12 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) Word has length 515 [2022-07-13 02:09:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:47,782 INFO L225 Difference]: With dead ends: 5718 [2022-07-13 02:09:47,782 INFO L226 Difference]: Without dead ends: 3389 [2022-07-13 02:09:47,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2022-07-13 02:09:47,785 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 137 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:47,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 416 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:09:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-07-13 02:09:47,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3183. [2022-07-13 02:09:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2546 states have (on average 1.0604870384917517) internal successors, (2700), 2532 states have internal predecessors, (2700), 400 states have call successors, (400), 145 states have call predecessors, (400), 232 states have return successors, (742), 505 states have call predecessors, (742), 393 states have call successors, (742) [2022-07-13 02:09:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 3842 transitions. [2022-07-13 02:09:47,946 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 3842 transitions. Word has length 515 [2022-07-13 02:09:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:47,946 INFO L495 AbstractCegarLoop]: Abstraction has 3183 states and 3842 transitions. [2022-07-13 02:09:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.9375) internal successors, (111), 18 states have internal predecessors, (111), 12 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 8 states have call predecessors, (22), 12 states have call successors, (22) [2022-07-13 02:09:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 3842 transitions. [2022-07-13 02:09:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-07-13 02:09:47,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:47,950 INFO L195 NwaCegarLoop]: trace histogram [58, 57, 32, 32, 32, 32, 32, 32, 31, 31, 26, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 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] [2022-07-13 02:09:47,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-07-13 02:09:48,151 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 [2022-07-13 02:09:48,151 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1852912570, now seen corresponding path program 11 times [2022-07-13 02:09:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195273045] [2022-07-13 02:09:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:48,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:48,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:48,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100434045] [2022-07-13 02:09:48,163 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:09:48,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:48,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:48,164 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) [2022-07-13 02:09:48,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-07-13 02:09:48,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-07-13 02:09:48,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:48,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 02:09:48,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10104 backedges. 4615 proven. 438 refuted. 0 times theorem prover too weak. 5051 trivial. 0 not checked. [2022-07-13 02:09:49,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10104 backedges. 630 proven. 721 refuted. 0 times theorem prover too weak. 8753 trivial. 0 not checked. [2022-07-13 02:09:52,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195273045] [2022-07-13 02:09:52,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100434045] [2022-07-13 02:09:52,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100434045] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:52,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:52,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2022-07-13 02:09:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171487993] [2022-07-13 02:09:52,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 02:09:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 02:09:52,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:09:52,027 INFO L87 Difference]: Start difference. First operand 3183 states and 3842 transitions. Second operand has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-13 02:09:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:55,632 INFO L93 Difference]: Finished difference Result 5926 states and 7246 transitions. [2022-07-13 02:09:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 02:09:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) Word has length 619 [2022-07-13 02:09:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:55,644 INFO L225 Difference]: With dead ends: 5926 [2022-07-13 02:09:55,644 INFO L226 Difference]: Without dead ends: 3690 [2022-07-13 02:09:55,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1223 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=298, Invalid=1772, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 02:09:55,647 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 115 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:55,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 397 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 02:09:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2022-07-13 02:09:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3597. [2022-07-13 02:09:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2910 states have (on average 1.0594501718213059) internal successors, (3083), 2884 states have internal predecessors, (3083), 450 states have call successors, (450), 145 states have call predecessors, (450), 232 states have return successors, (846), 567 states have call predecessors, (846), 443 states have call successors, (846) [2022-07-13 02:09:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 4379 transitions. [2022-07-13 02:09:55,855 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 4379 transitions. Word has length 619 [2022-07-13 02:09:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:55,856 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 4379 transitions. [2022-07-13 02:09:55,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 10 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 12 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-13 02:09:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 4379 transitions. [2022-07-13 02:09:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2022-07-13 02:09:55,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:55,861 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] [2022-07-13 02:09:55,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:56,064 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 [2022-07-13 02:09:56,065 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -652694880, now seen corresponding path program 12 times [2022-07-13 02:09:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:56,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498622170] [2022-07-13 02:09:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:56,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:56,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744183737] [2022-07-13 02:09:56,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:09:56,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:56,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:56,095 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) [2022-07-13 02:09:56,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-07-13 02:09:56,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-07-13 02:09:56,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:56,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 02:09:56,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7040 backedges. 277 proven. 30 refuted. 0 times theorem prover too weak. 6733 trivial. 0 not checked. [2022-07-13 02:09:56,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:56,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:56,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498622170] [2022-07-13 02:09:56,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:56,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744183737] [2022-07-13 02:09:56,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744183737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:09:56,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:09:56,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-07-13 02:09:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440840600] [2022-07-13 02:09:56,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 02:09:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 02:09:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-13 02:09:56,785 INFO L87 Difference]: Start difference. First operand 3597 states and 4379 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-13 02:09:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:57,291 INFO L93 Difference]: Finished difference Result 3599 states and 4379 transitions. [2022-07-13 02:09:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 02:09:57,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 525 [2022-07-13 02:09:57,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:57,301 INFO L225 Difference]: With dead ends: 3599 [2022-07-13 02:09:57,301 INFO L226 Difference]: Without dead ends: 3598 [2022-07-13 02:09:57,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:09:57,302 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 40 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:57,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 459 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:09:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2022-07-13 02:09:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3595. [2022-07-13 02:09:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 2908 states have (on average 1.0591471801925723) internal successors, (3080), 2883 states have internal predecessors, (3080), 450 states have call successors, (450), 145 states have call predecessors, (450), 232 states have return successors, (846), 566 states have call predecessors, (846), 443 states have call successors, (846) [2022-07-13 02:09:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4376 transitions. [2022-07-13 02:09:57,520 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4376 transitions. Word has length 525 [2022-07-13 02:09:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:57,521 INFO L495 AbstractCegarLoop]: Abstraction has 3595 states and 4376 transitions. [2022-07-13 02:09:57,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-13 02:09:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4376 transitions. [2022-07-13 02:09:57,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2022-07-13 02:09:57,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:57,525 INFO L195 NwaCegarLoop]: trace histogram [51, 48, 28, 28, 28, 28, 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] [2022-07-13 02:09:57,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-07-13 02:09:57,726 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 [2022-07-13 02:09:57,726 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:57,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1772399808, now seen corresponding path program 13 times [2022-07-13 02:09:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634343253] [2022-07-13 02:09:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:57,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:57,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025994503] [2022-07-13 02:09:57,740 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:09:57,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:57,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:57,742 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) [2022-07-13 02:09:57,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-07-13 02:09:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:09:57,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:09:57,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:09:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 2214 proven. 3 refuted. 0 times theorem prover too weak. 5180 trivial. 0 not checked. [2022-07-13 02:09:58,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:09:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7397 backedges. 577 proven. 84 refuted. 0 times theorem prover too weak. 6736 trivial. 0 not checked. [2022-07-13 02:09:58,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:09:58,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634343253] [2022-07-13 02:09:58,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:09:58,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025994503] [2022-07-13 02:09:58,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025994503] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:09:58,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:09:58,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-07-13 02:09:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052207693] [2022-07-13 02:09:58,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:09:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:09:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:09:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:09:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:09:58,331 INFO L87 Difference]: Start difference. First operand 3595 states and 4376 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:09:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:09:58,832 INFO L93 Difference]: Finished difference Result 6190 states and 7611 transitions. [2022-07-13 02:09:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 02:09:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 535 [2022-07-13 02:09:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:09:58,845 INFO L225 Difference]: With dead ends: 6190 [2022-07-13 02:09:58,845 INFO L226 Difference]: Without dead ends: 3515 [2022-07-13 02:09:58,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:09:58,851 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 50 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:09:58,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 348 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:09:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2022-07-13 02:09:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3507. [2022-07-13 02:09:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 2833 states have (on average 1.060007059654077) internal successors, (3003), 2812 states have internal predecessors, (3003), 445 states have call successors, (445), 143 states have call predecessors, (445), 224 states have return successors, (817), 551 states have call predecessors, (817), 438 states have call successors, (817) [2022-07-13 02:09:59,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4265 transitions. [2022-07-13 02:09:59,061 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4265 transitions. Word has length 535 [2022-07-13 02:09:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:09:59,061 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 4265 transitions. [2022-07-13 02:09:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 6 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 02:09:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4265 transitions. [2022-07-13 02:09:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-07-13 02:09:59,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:09:59,065 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] [2022-07-13 02:09:59,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-07-13 02:09:59,266 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 [2022-07-13 02:09:59,266 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:09:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:09:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -292548845, now seen corresponding path program 5 times [2022-07-13 02:09:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:09:59,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449695254] [2022-07-13 02:09:59,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:09:59,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:09:59,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:09:59,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500845806] [2022-07-13 02:09:59,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:09:59,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:09:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:09:59,279 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) [2022-07-13 02:09:59,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-07-13 02:09:59,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-07-13 02:09:59,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:09:59,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:09:59,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:10:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 1544 proven. 115 refuted. 0 times theorem prover too weak. 5485 trivial. 0 not checked. [2022-07-13 02:10:00,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:10:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7144 backedges. 736 proven. 158 refuted. 0 times theorem prover too weak. 6250 trivial. 0 not checked. [2022-07-13 02:10:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:10:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449695254] [2022-07-13 02:10:01,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 02:10:01,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500845806] [2022-07-13 02:10:01,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500845806] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:10:01,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:10:01,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2022-07-13 02:10:01,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113244615] [2022-07-13 02:10:01,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 02:10:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:10:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:10:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:10:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:10:01,438 INFO L87 Difference]: Start difference. First operand 3507 states and 4265 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) [2022-07-13 02:10:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:10:02,756 INFO L93 Difference]: Finished difference Result 6263 states and 7692 transitions. [2022-07-13 02:10:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 02:10:02,760 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 [2022-07-13 02:10:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:10:02,766 INFO L225 Difference]: With dead ends: 6263 [2022-07-13 02:10:02,766 INFO L226 Difference]: Without dead ends: 3817 [2022-07-13 02:10:02,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1068 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:10:02,770 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:10:02,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 301 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 02:10:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2022-07-13 02:10:02,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 3597. [2022-07-13 02:10:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 2932 states have (on average 1.0528649386084583) internal successors, (3087), 2900 states have internal predecessors, (3087), 439 states have call successors, (439), 139 states have call predecessors, (439), 221 states have return successors, (846), 557 states have call predecessors, (846), 433 states have call successors, (846) [2022-07-13 02:10:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 4372 transitions. [2022-07-13 02:10:02,979 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 4372 transitions. Word has length 541 [2022-07-13 02:10:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:10:02,979 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 4372 transitions. [2022-07-13 02:10:02,979 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) [2022-07-13 02:10:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 4372 transitions. [2022-07-13 02:10:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-07-13 02:10:02,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:10:02,983 INFO L195 NwaCegarLoop]: trace histogram [55, 52, 36, 36, 36, 36, 34, 34, 33, 33, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:10:03,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-07-13 02:10:03,184 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 [2022-07-13 02:10:03,184 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-13 02:10:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:10:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash 848495751, now seen corresponding path program 18 times [2022-07-13 02:10:03,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:10:03,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228086273] [2022-07-13 02:10:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:10:03,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:10:03,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 02:10:03,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321844832] [2022-07-13 02:10:03,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:10:03,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:10:03,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:10:03,196 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) [2022-07-13 02:10:03,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-07-13 02:10:03,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-07-13 02:10:03,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:10:03,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-13 02:10:03,621 INFO L286 TraceCheckSpWp]: Computing forward predicates...