./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 e8d55036 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-?-e8d5503-m [2023-02-15 22:59:49,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:59:49,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:59:49,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:59:49,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:59:49,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:59:49,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:59:49,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:59:49,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:59:49,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:59:49,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:59:49,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:59:49,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:59:49,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:59:49,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:59:49,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:59:49,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:59:49,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:59:49,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:59:49,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:59:49,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:59:49,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:59:49,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:59:49,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:59:49,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:59:49,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:59:49,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:59:49,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:59:49,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:59:49,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:59:49,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:59:49,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:59:49,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:59:49,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:59:49,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:59:49,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:59:49,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:59:49,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:59:49,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:59:49,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:59:49,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:59:49,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 22:59:49,777 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:59:49,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:59:49,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:59:49,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:59:49,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:59:49,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:59:49,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:59:49,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:59:49,779 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:59:49,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:59:49,780 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:59:49,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:59:49,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:59:49,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 22:59:49,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:59:49,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 22:59:49,781 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 22:59:49,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 22:59:49,781 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:59:49,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 22:59:49,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:59:49,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 22:59:49,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:59:49,783 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2023-02-15 22:59:49,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:59:49,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:59:49,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:59:49,996 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:59:49,997 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:59:49,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Binomial.c [2023-02-15 22:59:50,986 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:59:51,130 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:59:51,131 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Binomial.c [2023-02-15 22:59:51,135 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4239418d5/3a22fd14ed6d4beba9cf03afe1ccfa31/FLAG7d9df124d [2023-02-15 22:59:51,151 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4239418d5/3a22fd14ed6d4beba9cf03afe1ccfa31 [2023-02-15 22:59:51,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:59:51,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:59:51,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:59:51,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:59:51,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:59:51,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7771a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51, skipping insertion in model container [2023-02-15 22:59:51,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:59:51,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:59:51,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:59:51,272 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:59:51,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:59:51,289 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:59:51,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51 WrapperNode [2023-02-15 22:59:51,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:59:51,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:59:51,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:59:51,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:59:51,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,307 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-02-15 22:59:51,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:59:51,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:59:51,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:59:51,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:59:51,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,320 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:59:51,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:59:51,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:59:51,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:59:51,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (1/1) ... [2023-02-15 22:59:51,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:59:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:51,345 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 22:59:51,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 22:59:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2023-02-15 22:59:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2023-02-15 22:59:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2023-02-15 22:59:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2023-02-15 22:59:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:59:51,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:59:51,418 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:59:51,420 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:59:51,619 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:59:51,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:59:51,624 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 22:59:51,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:59:51 BoogieIcfgContainer [2023-02-15 22:59:51,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:59:51,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:59:51,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:59:51,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:59:51,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:59:51" (1/3) ... [2023-02-15 22:59:51,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ba7f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:59:51, skipping insertion in model container [2023-02-15 22:59:51,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:59:51" (2/3) ... [2023-02-15 22:59:51,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ba7f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:59:51, skipping insertion in model container [2023-02-15 22:59:51,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:59:51" (3/3) ... [2023-02-15 22:59:51,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2023-02-15 22:59:51,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:59:51,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-02-15 22:59:51,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:59:51,686 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30b03255, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:59:51,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-02-15 22:59:51,689 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) [2023-02-15 22:59:51,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 22:59:51,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:51,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:51,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2023-02-15 22:59:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:51,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345642335] [2023-02-15 22:59:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:51,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:51,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345642335] [2023-02-15 22:59:51,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345642335] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:51,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:51,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:59:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246119669] [2023-02-15 22:59:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 22:59:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 22:59:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 22:59:51,834 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) [2023-02-15 22:59:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:51,856 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2023-02-15 22:59:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 22:59:51,860 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 [2023-02-15 22:59:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:51,865 INFO L225 Difference]: With dead ends: 114 [2023-02-15 22:59:51,865 INFO L226 Difference]: Without dead ends: 56 [2023-02-15 22:59:51,869 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 [2023-02-15 22:59:51,873 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 [2023-02-15 22:59:51,873 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] [2023-02-15 22:59:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-15 22:59:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-15 22:59:51,900 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) [2023-02-15 22:59:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2023-02-15 22:59:51,902 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2023-02-15 22:59:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:51,902 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2023-02-15 22:59:51,902 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) [2023-02-15 22:59:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2023-02-15 22:59:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 22:59:51,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:51,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:51,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 22:59:51,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2023-02-15 22:59:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:51,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143149845] [2023-02-15 22:59:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143149845] [2023-02-15 22:59:51,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143149845] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:51,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:51,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:59:51,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603467879] [2023-02-15 22:59:51,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:51,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:51,949 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) [2023-02-15 22:59:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,002 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2023-02-15 22:59:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:59:52,006 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 [2023-02-15 22:59:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,007 INFO L225 Difference]: With dead ends: 109 [2023-02-15 22:59:52,007 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 22:59:52,007 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 [2023-02-15 22:59:52,009 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 [2023-02-15 22:59:52,011 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] [2023-02-15 22:59:52,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 22:59:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-15 22:59:52,018 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) [2023-02-15 22:59:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2023-02-15 22:59:52,019 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2023-02-15 22:59:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,019 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2023-02-15 22:59:52,019 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) [2023-02-15 22:59:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2023-02-15 22:59:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 22:59:52,019 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:52,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 22:59:52,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2023-02-15 22:59:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355179095] [2023-02-15 22:59:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355179095] [2023-02-15 22:59:52,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355179095] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:59:52,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406558190] [2023-02-15 22:59:52,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:59:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:59:52,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:59:52,064 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2023-02-15 22:59:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,081 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2023-02-15 22:59:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:59:52,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 [2023-02-15 22:59:52,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,089 INFO L225 Difference]: With dead ends: 59 [2023-02-15 22:59:52,089 INFO L226 Difference]: Without dead ends: 58 [2023-02-15 22:59:52,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:59:52,091 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 9 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 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 [2023-02-15 22:59:52,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-15 22:59:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-02-15 22:59:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.457142857142857) 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) [2023-02-15 22:59:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2023-02-15 22:59:52,100 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 13 [2023-02-15 22:59:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,101 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2023-02-15 22:59:52,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2023-02-15 22:59:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2023-02-15 22:59:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 22:59:52,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:52,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 22:59:52,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1789917062, now seen corresponding path program 1 times [2023-02-15 22:59:52,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880090557] [2023-02-15 22:59:52,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880090557] [2023-02-15 22:59:52,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880090557] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:59:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972899142] [2023-02-15 22:59:52,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:59:52,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:59:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:59:52,185 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-15 22:59:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,291 INFO L93 Difference]: Finished difference Result 153 states and 180 transitions. [2023-02-15 22:59:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:59:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2023-02-15 22:59:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,293 INFO L225 Difference]: With dead ends: 153 [2023-02-15 22:59:52,293 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 22:59:52,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:59:52,295 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 52 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:52,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 348 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 22:59:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2023-02-15 22:59:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 70 states have internal predecessors, (84), 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) [2023-02-15 22:59:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2023-02-15 22:59:52,309 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 14 [2023-02-15 22:59:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,309 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2023-02-15 22:59:52,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-02-15 22:59:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2023-02-15 22:59:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 22:59:52,310 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:52,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 22:59:52,311 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1946231172, now seen corresponding path program 1 times [2023-02-15 22:59:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285925327] [2023-02-15 22:59:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285925327] [2023-02-15 22:59:52,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285925327] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:59:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330557787] [2023-02-15 22:59:52,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:52,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:52,342 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-02-15 22:59:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,379 INFO L93 Difference]: Finished difference Result 184 states and 223 transitions. [2023-02-15 22:59:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:59:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2023-02-15 22:59:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,381 INFO L225 Difference]: With dead ends: 184 [2023-02-15 22:59:52,381 INFO L226 Difference]: Without dead ends: 104 [2023-02-15 22:59:52,382 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 [2023-02-15 22:59:52,382 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:52,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 166 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-15 22:59:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2023-02-15 22:59:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.4406779661016949) 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) [2023-02-15 22:59:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2023-02-15 22:59:52,392 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 14 [2023-02-15 22:59:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-02-15 22:59:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-02-15 22:59:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2023-02-15 22:59:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 22:59:52,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,393 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:52,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 22:59:52,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash -639849399, now seen corresponding path program 1 times [2023-02-15 22:59:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641925338] [2023-02-15 22:59:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 22:59:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:59:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641925338] [2023-02-15 22:59:52,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641925338] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:59:52,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614903423] [2023-02-15 22:59:52,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:59:52,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:59:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:59:52,471 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-15 22:59:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,579 INFO L93 Difference]: Finished difference Result 224 states and 292 transitions. [2023-02-15 22:59:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:59:52,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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 20 [2023-02-15 22:59:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,583 INFO L225 Difference]: With dead ends: 224 [2023-02-15 22:59:52,583 INFO L226 Difference]: Without dead ends: 144 [2023-02-15 22:59:52,587 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 [2023-02-15 22:59:52,593 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 43 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:52,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 304 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-15 22:59:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 124. [2023-02-15 22:59:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 99 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) [2023-02-15 22:59:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2023-02-15 22:59:52,612 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 20 [2023-02-15 22:59:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,612 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2023-02-15 22:59:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 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) [2023-02-15 22:59:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2023-02-15 22:59:52,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 22:59:52,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:59:52,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 22:59:52,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,614 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2023-02-15 22:59:52,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062484749] [2023-02-15 22:59:52,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 22:59:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-15 22:59:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 22:59:52,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062484749] [2023-02-15 22:59:52,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062484749] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:59:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561622187] [2023-02-15 22:59:52,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:59:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:59:52,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:59:52,696 INFO L87 Difference]: Start difference. First operand 124 states and 162 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) [2023-02-15 22:59:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,764 INFO L93 Difference]: Finished difference Result 162 states and 200 transitions. [2023-02-15 22:59:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:59:52,765 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 [2023-02-15 22:59:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,768 INFO L225 Difference]: With dead ends: 162 [2023-02-15 22:59:52,768 INFO L226 Difference]: Without dead ends: 161 [2023-02-15 22:59:52,768 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 [2023-02-15 22:59:52,770 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 62 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:52,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 248 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-02-15 22:59:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2023-02-15 22:59:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 110 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) [2023-02-15 22:59:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2023-02-15 22:59:52,794 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 22 [2023-02-15 22:59:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,794 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2023-02-15 22:59:52,794 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) [2023-02-15 22:59:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2023-02-15 22:59:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 22:59:52,795 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,795 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] [2023-02-15 22:59:52,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 22:59:52,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2023-02-15 22:59:52,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766827894] [2023-02-15 22:59:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 22:59:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-15 22:59:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 22:59:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:52,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766827894] [2023-02-15 22:59:52,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766827894] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:52,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:52,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:59:52,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262123693] [2023-02-15 22:59:52,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:52,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:59:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:59:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:59:52,854 INFO L87 Difference]: Start difference. First operand 139 states and 181 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) [2023-02-15 22:59:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:52,918 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2023-02-15 22:59:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:59:52,920 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 [2023-02-15 22:59:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:52,922 INFO L225 Difference]: With dead ends: 162 [2023-02-15 22:59:52,922 INFO L226 Difference]: Without dead ends: 161 [2023-02-15 22:59:52,922 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 [2023-02-15 22:59:52,923 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 60 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:52,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 262 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-02-15 22:59:52,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2023-02-15 22:59:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 96 states have (on average 1.4166666666666667) internal successors, (136), 110 states have internal predecessors, (136), 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) [2023-02-15 22:59:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2023-02-15 22:59:52,934 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 23 [2023-02-15 22:59:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:52,934 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2023-02-15 22:59:52,935 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) [2023-02-15 22:59:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2023-02-15 22:59:52,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 22:59:52,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:52,935 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, 1] [2023-02-15 22:59:52,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 22:59:52,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash 230694540, now seen corresponding path program 1 times [2023-02-15 22:59:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:52,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498426212] [2023-02-15 22:59:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-15 22:59:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-15 22:59:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 22:59:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:53,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498426212] [2023-02-15 22:59:53,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498426212] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:53,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:53,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 22:59:53,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579111033] [2023-02-15 22:59:53,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:53,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:59:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:59:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:59:53,033 INFO L87 Difference]: Start difference. First operand 139 states and 180 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2023-02-15 22:59:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:53,137 INFO L93 Difference]: Finished difference Result 290 states and 374 transitions. [2023-02-15 22:59:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 22:59:53,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 28 [2023-02-15 22:59:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:53,140 INFO L225 Difference]: With dead ends: 290 [2023-02-15 22:59:53,140 INFO L226 Difference]: Without dead ends: 167 [2023-02-15 22:59:53,141 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 [2023-02-15 22:59:53,142 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 64 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:53,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 340 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-02-15 22:59:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2023-02-15 22:59:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.404040404040404) internal successors, (139), 113 states have internal predecessors, (139), 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) [2023-02-15 22:59:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2023-02-15 22:59:53,160 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 28 [2023-02-15 22:59:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:53,160 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2023-02-15 22:59:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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) [2023-02-15 22:59:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2023-02-15 22:59:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 22:59:53,161 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:53,161 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] [2023-02-15 22:59:53,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 22:59:53,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2023-02-15 22:59:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:53,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685433851] [2023-02-15 22:59:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:53,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510433150] [2023-02-15 22:59:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:53,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:53,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 22:59:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 22:59:53,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 22:59:53,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:53,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685433851] [2023-02-15 22:59:53,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:53,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510433150] [2023-02-15 22:59:53,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510433150] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:53,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:53,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:59:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11185906] [2023-02-15 22:59:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:59:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:53,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:59:53,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:59:53,264 INFO L87 Difference]: Start difference. First operand 143 states and 183 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) [2023-02-15 22:59:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:53,322 INFO L93 Difference]: Finished difference Result 199 states and 280 transitions. [2023-02-15 22:59:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:59:53,323 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 [2023-02-15 22:59:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:53,324 INFO L225 Difference]: With dead ends: 199 [2023-02-15 22:59:53,324 INFO L226 Difference]: Without dead ends: 198 [2023-02-15 22:59:53,324 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 [2023-02-15 22:59:53,325 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 13 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:53,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 202 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-15 22:59:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 165. [2023-02-15 22:59:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 117 states have (on average 1.3675213675213675) internal successors, (160), 128 states have internal predecessors, (160), 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) [2023-02-15 22:59:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 224 transitions. [2023-02-15 22:59:53,333 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 224 transitions. Word has length 30 [2023-02-15 22:59:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:53,333 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 224 transitions. [2023-02-15 22:59:53,333 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) [2023-02-15 22:59:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 224 transitions. [2023-02-15 22:59:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 22:59:53,334 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:53,334 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] [2023-02-15 22:59:53,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 22:59:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 22:59:53,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:53,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash 655846524, now seen corresponding path program 1 times [2023-02-15 22:59:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247045367] [2023-02-15 22:59:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:53,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:53,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203786736] [2023-02-15 22:59:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:53,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:53,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 22:59:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 22:59:53,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 22:59:53,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:53,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:53,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247045367] [2023-02-15 22:59:53,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:53,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203786736] [2023-02-15 22:59:53,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203786736] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:53,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:53,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:59:53,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666642616] [2023-02-15 22:59:53,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:53,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:59:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:53,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:59:53,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:59:53,630 INFO L87 Difference]: Start difference. First operand 165 states and 224 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-02-15 22:59:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:53,667 INFO L93 Difference]: Finished difference Result 201 states and 275 transitions. [2023-02-15 22:59:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:59:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 31 [2023-02-15 22:59:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:53,670 INFO L225 Difference]: With dead ends: 201 [2023-02-15 22:59:53,670 INFO L226 Difference]: Without dead ends: 200 [2023-02-15 22:59:53,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:59:53,671 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 18 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:53,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 156 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-02-15 22:59:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 169. [2023-02-15 22:59:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 121 states have (on average 1.3471074380165289) internal successors, (163), 132 states have internal predecessors, (163), 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) [2023-02-15 22:59:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 227 transitions. [2023-02-15 22:59:53,682 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 227 transitions. Word has length 31 [2023-02-15 22:59:53,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:53,682 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 227 transitions. [2023-02-15 22:59:53,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-02-15 22:59:53,683 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 227 transitions. [2023-02-15 22:59:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 22:59:53,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:53,684 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] [2023-02-15 22:59:53,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:53,890 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,SelfDestructingSolverStorable10 [2023-02-15 22:59:53,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2023-02-15 22:59:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:53,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748393826] [2023-02-15 22:59:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:53,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:53,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032602691] [2023-02-15 22:59:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:53,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:53,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:53,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 22:59:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:53,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 22:59:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:54,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748393826] [2023-02-15 22:59:54,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:54,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032602691] [2023-02-15 22:59:54,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032602691] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:54,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:54,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:59:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060952015] [2023-02-15 22:59:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:54,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:59:54,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:59:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:59:54,008 INFO L87 Difference]: Start difference. First operand 169 states and 227 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:59:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:54,101 INFO L93 Difference]: Finished difference Result 256 states and 354 transitions. [2023-02-15 22:59:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:59:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-02-15 22:59:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:54,103 INFO L225 Difference]: With dead ends: 256 [2023-02-15 22:59:54,103 INFO L226 Difference]: Without dead ends: 255 [2023-02-15 22:59:54,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:59:54,104 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 29 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:54,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 217 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-15 22:59:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 200. [2023-02-15 22:59:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 154 states have internal predecessors, (191), 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) [2023-02-15 22:59:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 272 transitions. [2023-02-15 22:59:54,112 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 272 transitions. Word has length 32 [2023-02-15 22:59:54,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:54,113 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 272 transitions. [2023-02-15 22:59:54,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 22:59:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 272 transitions. [2023-02-15 22:59:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 22:59:54,114 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:54,114 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] [2023-02-15 22:59:54,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 22:59:54,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:54,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1091680962, now seen corresponding path program 1 times [2023-02-15 22:59:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:54,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348726850] [2023-02-15 22:59:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:54,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816775441] [2023-02-15 22:59:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:54,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:54,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:54,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:54,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 22:59:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:54,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 22:59:54,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 22:59:54,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:59:55,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:55,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348726850] [2023-02-15 22:59:55,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:55,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816775441] [2023-02-15 22:59:55,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816775441] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 22:59:55,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 22:59:55,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-02-15 22:59:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456930948] [2023-02-15 22:59:55,217 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 22:59:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 22:59:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 22:59:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:59:55,218 INFO L87 Difference]: Start difference. First operand 200 states and 272 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2023-02-15 22:59:55,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:55,274 INFO L93 Difference]: Finished difference Result 255 states and 349 transitions. [2023-02-15 22:59:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 22:59:55,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 33 [2023-02-15 22:59:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:55,276 INFO L225 Difference]: With dead ends: 255 [2023-02-15 22:59:55,276 INFO L226 Difference]: Without dead ends: 254 [2023-02-15 22:59:55,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 22:59:55,277 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 32 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:55,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 169 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-02-15 22:59:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 204. [2023-02-15 22:59:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.2933333333333332) internal successors, (194), 158 states have internal predecessors, (194), 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) [2023-02-15 22:59:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 275 transitions. [2023-02-15 22:59:55,285 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 275 transitions. Word has length 33 [2023-02-15 22:59:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:55,285 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 275 transitions. [2023-02-15 22:59:55,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2023-02-15 22:59:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 275 transitions. [2023-02-15 22:59:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 22:59:55,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:55,286 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] [2023-02-15 22:59:55,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:55,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:55,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2023-02-15 22:59:55,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:55,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415504049] [2023-02-15 22:59:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:55,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:55,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:55,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082844531] [2023-02-15 22:59:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:55,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:55,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:55,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:55,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 22:59:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:55,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:59:55,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:55,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415504049] [2023-02-15 22:59:55,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082844531] [2023-02-15 22:59:55,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082844531] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:55,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:55,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:59:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934017158] [2023-02-15 22:59:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:55,562 INFO L87 Difference]: Start difference. First operand 204 states and 275 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) [2023-02-15 22:59:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:55,578 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2023-02-15 22:59:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:59:55,579 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 [2023-02-15 22:59:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:55,580 INFO L225 Difference]: With dead ends: 204 [2023-02-15 22:59:55,580 INFO L226 Difference]: Without dead ends: 203 [2023-02-15 22:59:55,580 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 [2023-02-15 22:59:55,580 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:55,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:55,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-15 22:59:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-02-15 22:59:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 150 states have (on average 1.28) internal successors, (192), 157 states have internal predecessors, (192), 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) [2023-02-15 22:59:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 273 transitions. [2023-02-15 22:59:55,588 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 273 transitions. Word has length 38 [2023-02-15 22:59:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 273 transitions. [2023-02-15 22:59:55,589 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) [2023-02-15 22:59:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 273 transitions. [2023-02-15 22:59:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 22:59:55,589 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:55,589 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] [2023-02-15 22:59:55,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:55,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 22:59:55,795 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2023-02-15 22:59:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:55,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366091138] [2023-02-15 22:59:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:55,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:55,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:55,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928085938] [2023-02-15 22:59:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:55,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:55,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:55,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 22:59:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:55,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:59:55,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:55,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366091138] [2023-02-15 22:59:55,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:55,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928085938] [2023-02-15 22:59:55,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928085938] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:55,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:55,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:59:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152124006] [2023-02-15 22:59:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:55,854 INFO L87 Difference]: Start difference. First operand 203 states and 273 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) [2023-02-15 22:59:55,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:55,875 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2023-02-15 22:59:55,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:59:55,875 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 [2023-02-15 22:59:55,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:55,876 INFO L225 Difference]: With dead ends: 214 [2023-02-15 22:59:55,876 INFO L226 Difference]: Without dead ends: 213 [2023-02-15 22:59:55,877 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 [2023-02-15 22:59:55,878 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:55,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 167 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-15 22:59:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-02-15 22:59:55,886 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) [2023-02-15 22:59:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2023-02-15 22:59:55,887 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 39 [2023-02-15 22:59:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:55,888 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2023-02-15 22:59:55,888 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) [2023-02-15 22:59:55,888 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2023-02-15 22:59:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 22:59:55,889 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:55,889 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] [2023-02-15 22:59:55,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:56,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 22:59:56,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2023-02-15 22:59:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:56,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243813236] [2023-02-15 22:59:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:56,104 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473804243] [2023-02-15 22:59:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:56,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:56,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 22:59:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:56,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:59:56,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 22:59:56,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243813236] [2023-02-15 22:59:56,161 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473804243] [2023-02-15 22:59:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473804243] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:56,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:56,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:59:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74787636] [2023-02-15 22:59:56,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:56,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:56,163 INFO L87 Difference]: Start difference. First operand 213 states and 284 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) [2023-02-15 22:59:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:56,179 INFO L93 Difference]: Finished difference Result 213 states and 284 transitions. [2023-02-15 22:59:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:59:56,180 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 [2023-02-15 22:59:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:56,181 INFO L225 Difference]: With dead ends: 213 [2023-02-15 22:59:56,181 INFO L226 Difference]: Without dead ends: 212 [2023-02-15 22:59:56,181 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 [2023-02-15 22:59:56,182 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 142 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 [2023-02-15 22:59:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 142 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-15 22:59:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-02-15 22:59:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 159 states have (on average 1.2578616352201257) 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) [2023-02-15 22:59:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2023-02-15 22:59:56,190 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 42 [2023-02-15 22:59:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:56,190 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2023-02-15 22:59:56,190 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) [2023-02-15 22:59:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2023-02-15 22:59:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 22:59:56,191 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:56,191 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] [2023-02-15 22:59:56,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:56,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:56,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:56,398 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2023-02-15 22:59:56,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:56,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059609504] [2023-02-15 22:59:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:56,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:56,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747259985] [2023-02-15 22:59:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:56,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:56,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 22:59:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:56,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:59:56,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 22:59:56,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:56,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:56,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059609504] [2023-02-15 22:59:56,455 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:56,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747259985] [2023-02-15 22:59:56,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747259985] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:56,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:56,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:59:56,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440166415] [2023-02-15 22:59:56,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:59:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:56,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:59:56,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:59:56,456 INFO L87 Difference]: Start difference. First operand 212 states and 283 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) [2023-02-15 22:59:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:56,475 INFO L93 Difference]: Finished difference Result 217 states and 287 transitions. [2023-02-15 22:59:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:59:56,476 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 [2023-02-15 22:59:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:56,477 INFO L225 Difference]: With dead ends: 217 [2023-02-15 22:59:56,477 INFO L226 Difference]: Without dead ends: 216 [2023-02-15 22:59:56,477 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 [2023-02-15 22:59:56,477 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 5 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:56,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-15 22:59:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2023-02-15 22:59:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 162 states have (on average 1.2530864197530864) internal successors, (203), 166 states have internal predecessors, (203), 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) [2023-02-15 22:59:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 286 transitions. [2023-02-15 22:59:56,485 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 286 transitions. Word has length 43 [2023-02-15 22:59:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:56,485 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 286 transitions. [2023-02-15 22:59:56,485 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) [2023-02-15 22:59:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 286 transitions. [2023-02-15 22:59:56,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 22:59:56,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:56,486 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] [2023-02-15 22:59:56,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 22:59:56,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2023-02-15 22:59:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:56,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967772157] [2023-02-15 22:59:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:56,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:56,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689251600] [2023-02-15 22:59:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:56,699 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:56,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 22:59:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:56,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 22:59:56,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:56,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:59:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:56,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967772157] [2023-02-15 22:59:56,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:56,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689251600] [2023-02-15 22:59:56,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689251600] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:59:56,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:59:56,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 22:59:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610190349] [2023-02-15 22:59:56,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:59:56,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 22:59:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 22:59:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-15 22:59:56,891 INFO L87 Difference]: Start difference. First operand 215 states and 286 transitions. Second operand has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2023-02-15 22:59:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:57,175 INFO L93 Difference]: Finished difference Result 315 states and 408 transitions. [2023-02-15 22:59:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 22:59:57,175 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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 48 [2023-02-15 22:59:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:57,176 INFO L225 Difference]: With dead ends: 315 [2023-02-15 22:59:57,176 INFO L226 Difference]: Without dead ends: 314 [2023-02-15 22:59:57,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-02-15 22:59:57,177 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 170 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:57,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 533 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:59:57,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-02-15 22:59:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2023-02-15 22:59:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 210 states have (on average 1.2904761904761906) internal successors, (271), 216 states have internal predecessors, (271), 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) [2023-02-15 22:59:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 382 transitions. [2023-02-15 22:59:57,186 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 382 transitions. Word has length 48 [2023-02-15 22:59:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:57,186 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 382 transitions. [2023-02-15 22:59:57,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 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) [2023-02-15 22:59:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 382 transitions. [2023-02-15 22:59:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 22:59:57,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:57,187 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, 1] [2023-02-15 22:59:57,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 22:59:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 22:59:57,392 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -953842833, now seen corresponding path program 1 times [2023-02-15 22:59:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658438813] [2023-02-15 22:59:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:57,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:57,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451727915] [2023-02-15 22:59:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:57,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:57,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:57,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:57,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 22:59:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:57,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 22:59:57,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 22:59:57,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:57,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:57,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658438813] [2023-02-15 22:59:57,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:57,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451727915] [2023-02-15 22:59:57,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451727915] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:57,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:57,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 22:59:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812884793] [2023-02-15 22:59:57,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:59:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:59:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:59:57,485 INFO L87 Difference]: Start difference. First operand 278 states and 382 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2023-02-15 22:59:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:57,530 INFO L93 Difference]: Finished difference Result 497 states and 686 transitions. [2023-02-15 22:59:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:59:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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 54 [2023-02-15 22:59:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:57,531 INFO L225 Difference]: With dead ends: 497 [2023-02-15 22:59:57,532 INFO L226 Difference]: Without dead ends: 253 [2023-02-15 22:59:57,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:59:57,533 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:57,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 152 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-02-15 22:59:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2023-02-15 22:59:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 190 states have (on average 1.2789473684210526) internal successors, (243), 197 states have internal predecessors, (243), 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) [2023-02-15 22:59:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 341 transitions. [2023-02-15 22:59:57,540 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 341 transitions. Word has length 54 [2023-02-15 22:59:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:57,541 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 341 transitions. [2023-02-15 22:59:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 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) [2023-02-15 22:59:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 341 transitions. [2023-02-15 22:59:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 22:59:57,541 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:57,542 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, 1] [2023-02-15 22:59:57,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:57,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 732083949, now seen corresponding path program 2 times [2023-02-15 22:59:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:57,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280659497] [2023-02-15 22:59:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:57,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:57,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666903994] [2023-02-15 22:59:57,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:59:57,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:57,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:57,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 22:59:57,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 22:59:57,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:59:57,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:59:57,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 22:59:57,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280659497] [2023-02-15 22:59:57,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666903994] [2023-02-15 22:59:57,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666903994] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:57,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:57,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 22:59:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193183376] [2023-02-15 22:59:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:59:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:59:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:59:57,837 INFO L87 Difference]: Start difference. First operand 252 states and 341 transitions. Second operand has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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) [2023-02-15 22:59:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:57,958 INFO L93 Difference]: Finished difference Result 517 states and 717 transitions. [2023-02-15 22:59:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 22:59:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 54 [2023-02-15 22:59:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:57,960 INFO L225 Difference]: With dead ends: 517 [2023-02-15 22:59:57,960 INFO L226 Difference]: Without dead ends: 303 [2023-02-15 22:59:57,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-15 22:59:57,962 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 55 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 340 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 [2023-02-15 22:59:57,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 340 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-15 22:59:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 296. [2023-02-15 22:59:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 224 states have (on average 1.3080357142857142) internal successors, (293), 229 states have internal predecessors, (293), 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) [2023-02-15 22:59:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 413 transitions. [2023-02-15 22:59:57,971 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 413 transitions. Word has length 54 [2023-02-15 22:59:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 413 transitions. [2023-02-15 22:59:57,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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) [2023-02-15 22:59:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 413 transitions. [2023-02-15 22:59:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-15 22:59:57,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:57,972 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, 1] [2023-02-15 22:59:57,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:58,177 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash -36930177, now seen corresponding path program 1 times [2023-02-15 22:59:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:58,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462271929] [2023-02-15 22:59:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:58,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:58,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745388271] [2023-02-15 22:59:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:58,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:58,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 22:59:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 22:59:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:58,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:59:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 22:59:58,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:58,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462271929] [2023-02-15 22:59:58,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:58,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745388271] [2023-02-15 22:59:58,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745388271] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:59:58,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:59:58,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-15 22:59:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977501927] [2023-02-15 22:59:58,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:59:58,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 22:59:58,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:58,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 22:59:58,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-02-15 22:59:58,352 INFO L87 Difference]: Start difference. First operand 296 states and 413 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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) [2023-02-15 22:59:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:58,552 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2023-02-15 22:59:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 22:59:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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 53 [2023-02-15 22:59:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:58,554 INFO L225 Difference]: With dead ends: 533 [2023-02-15 22:59:58,554 INFO L226 Difference]: Without dead ends: 324 [2023-02-15 22:59:58,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-02-15 22:59:58,555 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 42 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:58,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 646 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:59:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-15 22:59:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 307. [2023-02-15 22:59:58,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 235 states have (on average 1.3021276595744682) internal successors, (306), 240 states have internal predecessors, (306), 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) [2023-02-15 22:59:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 426 transitions. [2023-02-15 22:59:58,565 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 426 transitions. Word has length 53 [2023-02-15 22:59:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:58,566 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 426 transitions. [2023-02-15 22:59:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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) [2023-02-15 22:59:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 426 transitions. [2023-02-15 22:59:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 22:59:58,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:58,566 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] [2023-02-15 22:59:58,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:58,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-15 22:59:58,775 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:58,775 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2023-02-15 22:59:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:58,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440752674] [2023-02-15 22:59:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:58,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:58,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:58,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089485985] [2023-02-15 22:59:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:58,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:58,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 22:59:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:58,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 22:59:58,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 22:59:58,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:59:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440752674] [2023-02-15 22:59:58,846 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:58,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089485985] [2023-02-15 22:59:58,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089485985] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:59:58,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:59:58,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 22:59:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501396580] [2023-02-15 22:59:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:59:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 22:59:58,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 22:59:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 22:59:58,848 INFO L87 Difference]: Start difference. First operand 307 states and 426 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 22:59:58,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:59:58,879 INFO L93 Difference]: Finished difference Result 307 states and 426 transitions. [2023-02-15 22:59:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:59:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2023-02-15 22:59:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:59:58,881 INFO L225 Difference]: With dead ends: 307 [2023-02-15 22:59:58,881 INFO L226 Difference]: Without dead ends: 306 [2023-02-15 22:59:58,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:59:58,882 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:59:58,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 202 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:59:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-02-15 22:59:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2023-02-15 22:59:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 239 states have internal predecessors, (303), 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) [2023-02-15 22:59:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 423 transitions. [2023-02-15 22:59:58,900 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 423 transitions. Word has length 55 [2023-02-15 22:59:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:59:58,900 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 423 transitions. [2023-02-15 22:59:58,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 22:59:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 423 transitions. [2023-02-15 22:59:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 22:59:58,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:59:58,901 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, 1] [2023-02-15 22:59:58,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 22:59:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 22:59:59,105 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 22:59:59,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:59:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1043827591, now seen corresponding path program 1 times [2023-02-15 22:59:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 22:59:59,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028847695] [2023-02-15 22:59:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:59,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 22:59:59,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 22:59:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150673709] [2023-02-15 22:59:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:59:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 22:59:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:59:59,112 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 22:59:59,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 22:59:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:59:59,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 22:59:59,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:59:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 22:59:59,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:59:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 22:59:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 22:59:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028847695] [2023-02-15 22:59:59,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 22:59:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150673709] [2023-02-15 22:59:59,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150673709] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:59:59,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:59:59,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 22:59:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285354847] [2023-02-15 22:59:59,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:59:59,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 22:59:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 22:59:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 22:59:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-02-15 22:59:59,794 INFO L87 Difference]: Start difference. First operand 306 states and 423 transitions. Second operand has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 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) [2023-02-15 23:00:01,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:01,378 INFO L93 Difference]: Finished difference Result 608 states and 826 transitions. [2023-02-15 23:00:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 23:00:01,379 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 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 56 [2023-02-15 23:00:01,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:01,381 INFO L225 Difference]: With dead ends: 608 [2023-02-15 23:00:01,381 INFO L226 Difference]: Without dead ends: 394 [2023-02-15 23:00:01,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:00:01,382 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 163 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:01,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 756 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 23:00:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-02-15 23:00:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 367. [2023-02-15 23:00:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 286 states have (on average 1.2727272727272727) internal successors, (364), 285 states have internal predecessors, (364), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 65 states have call predecessors, (85), 52 states have call successors, (85) [2023-02-15 23:00:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 501 transitions. [2023-02-15 23:00:01,393 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 501 transitions. Word has length 56 [2023-02-15 23:00:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:01,394 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 501 transitions. [2023-02-15 23:00:01,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 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) [2023-02-15 23:00:01,394 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 501 transitions. [2023-02-15 23:00:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-15 23:00:01,394 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:01,394 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:01,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:01,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:01,595 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash 342724557, now seen corresponding path program 1 times [2023-02-15 23:00:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:01,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475663910] [2023-02-15 23:00:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:01,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22679651] [2023-02-15 23:00:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:01,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:01,601 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:01,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 23:00:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:01,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:00:01,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-15 23:00:01,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:00:01,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:01,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475663910] [2023-02-15 23:00:01,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:01,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22679651] [2023-02-15 23:00:01,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22679651] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:01,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:01,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 23:00:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150309282] [2023-02-15 23:00:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:01,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 23:00:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 23:00:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:01,682 INFO L87 Difference]: Start difference. First operand 367 states and 501 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-02-15 23:00:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:01,740 INFO L93 Difference]: Finished difference Result 690 states and 937 transitions. [2023-02-15 23:00:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 23:00:01,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 64 [2023-02-15 23:00:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:01,742 INFO L225 Difference]: With dead ends: 690 [2023-02-15 23:00:01,742 INFO L226 Difference]: Without dead ends: 372 [2023-02-15 23:00:01,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:00:01,743 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 41 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:01,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 336 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-02-15 23:00:01,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2023-02-15 23:00:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 283 states have (on average 1.2614840989399294) internal successors, (357), 282 states have internal predecessors, (357), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-02-15 23:00:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 486 transitions. [2023-02-15 23:00:01,754 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 486 transitions. Word has length 64 [2023-02-15 23:00:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:01,754 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 486 transitions. [2023-02-15 23:00:01,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-02-15 23:00:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 486 transitions. [2023-02-15 23:00:01,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-15 23:00:01,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:01,755 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] [2023-02-15 23:00:01,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:01,961 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2023-02-15 23:00:01,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:01,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660820692] [2023-02-15 23:00:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:01,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570233061] [2023-02-15 23:00:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:01,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:01,967 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:00:01,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 23:00:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:02,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:00:02,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 23:00:02,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:00:02,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:02,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660820692] [2023-02-15 23:00:02,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:02,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570233061] [2023-02-15 23:00:02,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570233061] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:02,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:02,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 23:00:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953688686] [2023-02-15 23:00:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 23:00:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 23:00:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 23:00:02,064 INFO L87 Difference]: Start difference. First operand 363 states and 486 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-02-15 23:00:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:02,138 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2023-02-15 23:00:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 23:00:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 66 [2023-02-15 23:00:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:02,139 INFO L225 Difference]: With dead ends: 370 [2023-02-15 23:00:02,139 INFO L226 Difference]: Without dead ends: 369 [2023-02-15 23:00:02,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-02-15 23:00:02,141 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:02,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 214 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-02-15 23:00:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 363. [2023-02-15 23:00:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 283 states have (on average 1.254416961130742) internal successors, (355), 282 states have internal predecessors, (355), 50 states have call successors, (50), 17 states have call predecessors, (50), 20 states have return successors, (79), 63 states have call predecessors, (79), 50 states have call successors, (79) [2023-02-15 23:00:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 484 transitions. [2023-02-15 23:00:02,155 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 484 transitions. Word has length 66 [2023-02-15 23:00:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:02,155 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 484 transitions. [2023-02-15 23:00:02,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-02-15 23:00:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 484 transitions. [2023-02-15 23:00:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 23:00:02,156 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:02,156 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] [2023-02-15 23:00:02,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:02,362 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,SelfDestructingSolverStorable24 [2023-02-15 23:00:02,363 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2023-02-15 23:00:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:02,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848243133] [2023-02-15 23:00:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:02,367 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:02,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353015176] [2023-02-15 23:00:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:02,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:02,380 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) [2023-02-15 23:00:02,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 23:00:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:02,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:00:02,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 23:00:02,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-15 23:00:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:02,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848243133] [2023-02-15 23:00:02,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:02,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353015176] [2023-02-15 23:00:02,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353015176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:02,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:00:02,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-15 23:00:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199880818] [2023-02-15 23:00:02,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:02,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 23:00:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 23:00:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:00:02,578 INFO L87 Difference]: Start difference. First operand 363 states and 484 transitions. Second operand has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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) [2023-02-15 23:00:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:02,761 INFO L93 Difference]: Finished difference Result 444 states and 591 transitions. [2023-02-15 23:00:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 23:00:02,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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 67 [2023-02-15 23:00:02,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:02,763 INFO L225 Difference]: With dead ends: 444 [2023-02-15 23:00:02,763 INFO L226 Difference]: Without dead ends: 443 [2023-02-15 23:00:02,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-02-15 23:00:02,763 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 93 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:02,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 603 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-02-15 23:00:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 422. [2023-02-15 23:00:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 328 states have (on average 1.2591463414634145) internal successors, (413), 326 states have internal predecessors, (413), 62 states have call successors, (62), 19 states have call predecessors, (62), 22 states have return successors, (100), 76 states have call predecessors, (100), 62 states have call successors, (100) [2023-02-15 23:00:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 575 transitions. [2023-02-15 23:00:02,777 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 575 transitions. Word has length 67 [2023-02-15 23:00:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:02,777 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 575 transitions. [2023-02-15 23:00:02,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 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) [2023-02-15 23:00:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 575 transitions. [2023-02-15 23:00:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 23:00:02,778 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:02,778 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 3, 3, 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, 1] [2023-02-15 23:00:02,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:02,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-15 23:00:02,983 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1670444076, now seen corresponding path program 1 times [2023-02-15 23:00:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:02,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996477643] [2023-02-15 23:00:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:02,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:02,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:02,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558774260] [2023-02-15 23:00:02,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:02,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:02,996 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) [2023-02-15 23:00:02,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 23:00:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:03,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:00:03,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 23:00:03,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-15 23:00:03,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:03,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996477643] [2023-02-15 23:00:03,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:03,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558774260] [2023-02-15 23:00:03,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558774260] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:03,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:00:03,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-02-15 23:00:03,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53014668] [2023-02-15 23:00:03,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:03,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 23:00:03,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:03,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 23:00:03,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-02-15 23:00:03,296 INFO L87 Difference]: Start difference. First operand 422 states and 575 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 23:00:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:03,453 INFO L93 Difference]: Finished difference Result 821 states and 1126 transitions. [2023-02-15 23:00:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:00:03,454 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2023-02-15 23:00:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:03,455 INFO L225 Difference]: With dead ends: 821 [2023-02-15 23:00:03,455 INFO L226 Difference]: Without dead ends: 439 [2023-02-15 23:00:03,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:00:03,457 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 65 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:03,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 506 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-02-15 23:00:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 423. [2023-02-15 23:00:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 328 states have (on average 1.2560975609756098) internal successors, (412), 327 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) [2023-02-15 23:00:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 572 transitions. [2023-02-15 23:00:03,469 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 572 transitions. Word has length 71 [2023-02-15 23:00:03,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:03,469 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 572 transitions. [2023-02-15 23:00:03,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 23:00:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 572 transitions. [2023-02-15 23:00:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 23:00:03,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:03,470 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 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, 1, 1] [2023-02-15 23:00:03,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:03,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-02-15 23:00:03,676 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash -637059568, now seen corresponding path program 2 times [2023-02-15 23:00:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568871496] [2023-02-15 23:00:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:03,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:03,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:03,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936641203] [2023-02-15 23:00:03,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:00:03,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:03,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:03,683 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) [2023-02-15 23:00:03,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 23:00:03,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:00:03,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:00:03,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:00:03,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-02-15 23:00:03,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:03,920 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-02-15 23:00:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:03,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568871496] [2023-02-15 23:00:03,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:03,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936641203] [2023-02-15 23:00:03,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936641203] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:00:03,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:00:03,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 23:00:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397137237] [2023-02-15 23:00:03,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:03,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:00:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:00:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:00:03,925 INFO L87 Difference]: Start difference. First operand 423 states and 572 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-02-15 23:00:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:04,191 INFO L93 Difference]: Finished difference Result 481 states and 627 transitions. [2023-02-15 23:00:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 23:00:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 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 72 [2023-02-15 23:00:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:04,193 INFO L225 Difference]: With dead ends: 481 [2023-02-15 23:00:04,193 INFO L226 Difference]: Without dead ends: 480 [2023-02-15 23:00:04,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2023-02-15 23:00:04,194 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 146 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 497 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:00:04,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-15 23:00:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 472. [2023-02-15 23:00:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 366 states have (on average 1.2459016393442623) internal successors, (456), 367 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) [2023-02-15 23:00:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 625 transitions. [2023-02-15 23:00:04,207 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 625 transitions. Word has length 72 [2023-02-15 23:00:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 625 transitions. [2023-02-15 23:00:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 12 states have internal predecessors, (63), 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) [2023-02-15 23:00:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 625 transitions. [2023-02-15 23:00:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-15 23:00:04,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:04,209 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] [2023-02-15 23:00:04,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:04,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:04,413 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2023-02-15 23:00:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:04,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941013312] [2023-02-15 23:00:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:04,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220348570] [2023-02-15 23:00:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:04,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:04,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:04,429 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) [2023-02-15 23:00:04,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 23:00:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:04,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 23:00:04,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-15 23:00:04,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:00:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:04,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941013312] [2023-02-15 23:00:04,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:04,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220348570] [2023-02-15 23:00:04,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220348570] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:04,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:04,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 23:00:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054083588] [2023-02-15 23:00:04,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:04,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 23:00:04,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 23:00:04,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-15 23:00:04,542 INFO L87 Difference]: Start difference. First operand 472 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) [2023-02-15 23:00:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:04,678 INFO L93 Difference]: Finished difference Result 886 states and 1184 transitions. [2023-02-15 23:00:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:00:04,679 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 [2023-02-15 23:00:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:04,681 INFO L225 Difference]: With dead ends: 886 [2023-02-15 23:00:04,681 INFO L226 Difference]: Without dead ends: 471 [2023-02-15 23:00:04,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:00:04,683 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 52 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:04,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 312 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-02-15 23:00:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 464. [2023-02-15 23:00:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 359 states have (on average 1.2479108635097493) internal successors, (448), 361 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) [2023-02-15 23:00:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 615 transitions. [2023-02-15 23:00:04,698 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 615 transitions. Word has length 76 [2023-02-15 23:00:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:04,698 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 615 transitions. [2023-02-15 23:00:04,698 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) [2023-02-15 23:00:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 615 transitions. [2023-02-15 23:00:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-15 23:00:04,699 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:04,699 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] [2023-02-15 23:00:04,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:04,904 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,SelfDestructingSolverStorable28 [2023-02-15 23:00:04,904 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 2 times [2023-02-15 23:00:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326072594] [2023-02-15 23:00:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:04,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:04,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328958565] [2023-02-15 23:00:04,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:00:04,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:04,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:04,910 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) [2023-02-15 23:00:04,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 23:00:04,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:00:04,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:00:04,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:00:04,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-02-15 23:00:05,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326072594] [2023-02-15 23:00:05,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328958565] [2023-02-15 23:00:05,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328958565] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:05,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:00:05,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-15 23:00:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423798706] [2023-02-15 23:00:05,301 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 23:00:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:00:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:00:05,302 INFO L87 Difference]: Start difference. First operand 464 states and 615 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 23:00:05,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:05,447 INFO L93 Difference]: Finished difference Result 498 states and 649 transitions. [2023-02-15 23:00:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:00:05,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-02-15 23:00:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:05,450 INFO L225 Difference]: With dead ends: 498 [2023-02-15 23:00:05,450 INFO L226 Difference]: Without dead ends: 497 [2023-02-15 23:00:05,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-02-15 23:00:05,453 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 59 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:05,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 363 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:00:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-02-15 23:00:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 488. [2023-02-15 23:00:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 378 states have (on average 1.2380952380952381) internal successors, (468), 380 states have internal predecessors, (468), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 80 states have call predecessors, (103), 68 states have call successors, (103) [2023-02-15 23:00:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 639 transitions. [2023-02-15 23:00:05,469 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 639 transitions. Word has length 80 [2023-02-15 23:00:05,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:05,469 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 639 transitions. [2023-02-15 23:00:05,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 23:00:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 639 transitions. [2023-02-15 23:00:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-02-15 23:00:05,472 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:05,472 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] [2023-02-15 23:00:05,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:05,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:05,677 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:05,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2023-02-15 23:00:05,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:05,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689921591] [2023-02-15 23:00:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:05,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:05,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529315811] [2023-02-15 23:00:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:05,684 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) [2023-02-15 23:00:05,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-15 23:00:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:05,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:00:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-02-15 23:00:05,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689921591] [2023-02-15 23:00:05,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529315811] [2023-02-15 23:00:05,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529315811] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:05,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:00:05,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-02-15 23:00:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248209879] [2023-02-15 23:00:05,857 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:05,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:05,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:05,858 INFO L87 Difference]: Start difference. First operand 488 states and 639 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) [2023-02-15 23:00:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:05,896 INFO L93 Difference]: Finished difference Result 528 states and 701 transitions. [2023-02-15 23:00:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:00:05,897 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 [2023-02-15 23:00:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:05,899 INFO L225 Difference]: With dead ends: 528 [2023-02-15 23:00:05,899 INFO L226 Difference]: Without dead ends: 527 [2023-02-15 23:00:05,899 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 [2023-02-15 23:00:05,900 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:05,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 149 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-02-15 23:00:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 500. [2023-02-15 23:00:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 390 states have (on average 1.2230769230769232) internal successors, (477), 386 states have internal predecessors, (477), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 86 states have call predecessors, (103), 68 states have call successors, (103) [2023-02-15 23:00:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 648 transitions. [2023-02-15 23:00:05,914 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 648 transitions. Word has length 84 [2023-02-15 23:00:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:05,914 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 648 transitions. [2023-02-15 23:00:05,914 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) [2023-02-15 23:00:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 648 transitions. [2023-02-15 23:00:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-15 23:00:05,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:05,915 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] [2023-02-15 23:00:05,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-02-15 23:00:06,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:06,120 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:06,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2023-02-15 23:00:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:06,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356834888] [2023-02-15 23:00:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:06,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218712316] [2023-02-15 23:00:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:06,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:06,129 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) [2023-02-15 23:00:06,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-15 23:00:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:06,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:00:06,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-02-15 23:00:06,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:06,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356834888] [2023-02-15 23:00:06,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:06,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218712316] [2023-02-15 23:00:06,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218712316] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:00:06,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:00:06,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-02-15 23:00:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132059072] [2023-02-15 23:00:06,350 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:00:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:00:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:00:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:06,351 INFO L87 Difference]: Start difference. First operand 500 states and 648 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2023-02-15 23:00:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:06,392 INFO L93 Difference]: Finished difference Result 527 states and 692 transitions. [2023-02-15 23:00:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:00:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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 85 [2023-02-15 23:00:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:06,394 INFO L225 Difference]: With dead ends: 527 [2023-02-15 23:00:06,394 INFO L226 Difference]: Without dead ends: 526 [2023-02-15 23:00:06,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 23:00:06,395 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:06,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 151 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:00:06,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-02-15 23:00:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 485. [2023-02-15 23:00:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 375 states have (on average 1.224) internal successors, (459), 378 states have internal predecessors, (459), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-02-15 23:00:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 630 transitions. [2023-02-15 23:00:06,408 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 630 transitions. Word has length 85 [2023-02-15 23:00:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:06,408 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 630 transitions. [2023-02-15 23:00:06,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2023-02-15 23:00:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 630 transitions. [2023-02-15 23:00:06,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 23:00:06,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:06,409 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] [2023-02-15 23:00:06,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:06,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:06,613 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:06,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:06,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2023-02-15 23:00:06,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:06,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121603365] [2023-02-15 23:00:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:06,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:06,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166193412] [2023-02-15 23:00:06,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:00:06,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:06,621 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) [2023-02-15 23:00:06,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-15 23:00:06,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:00:06,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:00:06,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 23:00:06,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 23:00:06,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:00:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:00:06,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121603365] [2023-02-15 23:00:06,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:00:06,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166193412] [2023-02-15 23:00:06,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166193412] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:00:06,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:00:06,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 23:00:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458673862] [2023-02-15 23:00:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:00:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:00:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:00:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:00:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:00:06,880 INFO L87 Difference]: Start difference. First operand 485 states and 630 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 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) [2023-02-15 23:00:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:00:07,064 INFO L93 Difference]: Finished difference Result 489 states and 638 transitions. [2023-02-15 23:00:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:00:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 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 [2023-02-15 23:00:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:00:07,066 INFO L225 Difference]: With dead ends: 489 [2023-02-15 23:00:07,066 INFO L226 Difference]: Without dead ends: 487 [2023-02-15 23:00:07,066 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 [2023-02-15 23:00:07,067 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 13 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:00:07,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 195 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:00:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-02-15 23:00:07,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2023-02-15 23:00:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 375 states have (on average 1.184) internal successors, (444), 376 states have internal predecessors, (444), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (103), 79 states have call predecessors, (103), 68 states have call successors, (103) [2023-02-15 23:00:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 615 transitions. [2023-02-15 23:00:07,088 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 615 transitions. Word has length 86 [2023-02-15 23:00:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:00:07,088 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 615 transitions. [2023-02-15 23:00:07,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 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) [2023-02-15 23:00:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 615 transitions. [2023-02-15 23:00:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-15 23:00:07,089 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:00:07,089 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:00:07,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-02-15 23:00:07,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:07,294 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:00:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:00:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash -953713958, now seen corresponding path program 1 times [2023-02-15 23:00:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:00:07,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4600741] [2023-02-15 23:00:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:00:07,299 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:00:07,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386930360] [2023-02-15 23:00:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:00:07,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:00:07,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:00:07,301 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) [2023-02-15 23:00:07,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-02-15 23:00:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:00:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-15 23:00:07,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:00:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-02-15 23:00:07,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:00:13,915 WARN L859 $PredicateComparison]: unable to prove that (and (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse0 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0) 2147483648))) (not (<= 0 (+ .cse0 2147483648))) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse1 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse1 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse2 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse1) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse1))) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2)) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2) 2147483646)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse3 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse4 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3) 2147483646) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse4)) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse4) 2147483646)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0))))) (< .cse3 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse6 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse5 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5))) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6) 2147483646) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5) 2147483647)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0))))) (< .cse6 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse7 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse7 2147483648))) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse8 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse9 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (< .cse8 0)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8) 2147483648)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9) 2147483646) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0)))) (< .cse9 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse11 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse10 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11) 2147483648)))) (not (<= 0 (+ .cse11 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse12 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse12 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) 2147483647)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse13 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse14 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse13) 2147483647) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14))))) (< .cse13 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse15 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse15 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse16 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16))) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse15) 2147483648))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse18 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse17 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17))) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18) 2147483647)))) (< .cse18 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse19 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse19 2147483648))) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19) 2147483648))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse20 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse21 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (< .cse20 0)) (not (<= 0 (+ .cse21 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse20) 2147483648)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse20)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse22 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse23 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (< .cse22 0)) (not (<= 0 (+ .cse23 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse25 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|)) (.cse24 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (< .cse24 0)) (not (<= 0 (+ .cse25 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24) 2147483648)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25))) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse26 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26) 2147483647)) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (< .cse26 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse27 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse27 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27) 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse28 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 2147483646) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0)))) (< .cse28 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse29 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse29 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse30 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30))) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30) 2147483647)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29))))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse31 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse32 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse32) 2147483647) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31)))) (<= 0 .cse31) (< .cse32 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse33 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse33 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse34 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33) 2147483648) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34) 2147483646)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse35 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35) 2147483647))) (< .cse35 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse36 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#res|))) (or (not (<= 0 (+ .cse36 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse37 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse37))) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse36)) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse37)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse36) 2147483648)))))))) is different from true [2023-02-15 23:00:20,817 WARN L859 $PredicateComparison]: unable to prove that (and (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse0 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (not (<= 0 (+ .cse0 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse1 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0) 2147483647) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse1)) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse1) 2147483646)) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse0))))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse3 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse2 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3) 2147483647) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse2) 2147483647)) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse3)))))) (not (<= 0 (+ .cse3 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse4 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse4 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse5 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse4) 2147483647) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse5)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse7 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse6 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse6)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse7) 2147483648)))) (not (<= 0 (+ .cse7 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse8 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse8) 2147483647) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))))) (< .cse8 0)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse10 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse9 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9))) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse9)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse10) 2147483648)))) (not (<= 0 (+ .cse10 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse11 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11) 2147483647) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) 2147483647)) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse11))))) (not (<= 0 (+ .cse11 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse12 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n)) (.cse13 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (< .cse12 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse13)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse12) 2147483647) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse13)))) (<= 0 .cse13)))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse14 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (not (<= 0 (+ .cse14 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse14) 2147483648))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse16 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse15 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse15))) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse15)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16) 2147483648) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse16))))) (not (<= 0 (+ .cse16 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse17 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse17 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse17) 2147483647)) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse18 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse18 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse19 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18) 2147483646) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse19) 2147483647)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse18)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse20 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse20 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse21 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse20) 2147483647) (< 2147483646 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse21)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse23 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse22 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22)) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse22) 2147483646)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23) 2147483648) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse23))))) (not (<= 0 (+ .cse23 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse24 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse25 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (not (< .cse24 0)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< 2147483648 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse24)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse25) 2147483648))) (not (<= 0 (+ .cse25 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse26 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse27 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (not (< .cse26 0)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26) 2147483648)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27) 2147483647) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse26)) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse27))))) (not (<= 0 (+ .cse27 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse29 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse28 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse28 0) (not (< .cse29 0)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29) 2147483648)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28) 2147483646) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse29)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse28)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse30 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse30 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (let ((.cse31 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30) 2147483646) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31)) (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse31) 2147483646)) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse30)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0)))))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse32 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0) (< 2147483647 (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|))) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse32) 2147483648))) (not (<= 0 (+ .cse32 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse33 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33) 2147483647) (not (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse33))))) (not (<= 0 (+ .cse33 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse34 (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|)) (.cse35 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (not (< .cse34 0)) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (not (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34) 2147483648)) (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse34)) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35) 2147483648) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse35)))) (not (<= 0 (+ .cse35 2147483648)))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse36 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (< .cse36 0) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse36) 2147483646) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse36)) (not (< |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| 0)))) (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648))))) (forall ((|v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| Int)) (let ((.cse37 (* |c_fact_#t~ret0| |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| c_fact_~n))) (or (<= 0 (+ (* |v_binomialCoefficient_#t~ret2_BEFORE_CALL_9| |c_fact_#in~n|) 2147483648)) (not (<= 0 (+ .cse37 2147483648))) (forall ((|v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| Int)) (or (<= 0 |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9|) (<= (div |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse37) 2147483648) (= 0 (mod |v_binomialCoefficient_#t~ret1_BEFORE_CALL_9| .cse37)))))))) is different from true [2023-02-15 23:01:52,641 WARN L233 SmtUtils]: Spent 51.21s on a formula simplification. DAG size of input: 133 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 23:01:52,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4600741] [2023-02-15 23:01:52,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:01:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386930360] [2023-02-15 23:01:52,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386930360] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:52,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:01:52,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-15 23:01:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357169447] [2023-02-15 23:01:52,646 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:52,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 23:01:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 23:01:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=436, Unknown=14, NotChecked=86, Total=600 [2023-02-15 23:01:52,648 INFO L87 Difference]: Start difference. First operand 483 states and 615 transitions. Second operand has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-15 23:01:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:59,595 INFO L93 Difference]: Finished difference Result 530 states and 702 transitions. [2023-02-15 23:01:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 23:01:59,595 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 87 [2023-02-15 23:01:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:59,598 INFO L225 Difference]: With dead ends: 530 [2023-02-15 23:01:59,598 INFO L226 Difference]: Without dead ends: 529 [2023-02-15 23:01:59,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 95.2s TimeCoverageRelationStatistics Valid=147, Invalid=967, Unknown=16, NotChecked=130, Total=1260 [2023-02-15 23:01:59,599 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 76 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:59,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 393 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:01:59,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-02-15 23:01:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 495. [2023-02-15 23:01:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 385 states have (on average 1.1792207792207792) internal successors, (454), 386 states have internal predecessors, (454), 68 states have call successors, (68), 27 states have call predecessors, (68), 34 states have return successors, (106), 81 states have call predecessors, (106), 68 states have call successors, (106) [2023-02-15 23:01:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2023-02-15 23:01:59,613 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 87 [2023-02-15 23:01:59,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:59,614 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2023-02-15 23:01:59,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 18 states have internal predecessors, (56), 8 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-15 23:01:59,614 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2023-02-15 23:01:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 23:01:59,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:59,625 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 6, 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, 1, 1] [2023-02-15 23:01:59,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:59,829 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,SelfDestructingSolverStorable33 [2023-02-15 23:01:59,830 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:01:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1580168954, now seen corresponding path program 2 times [2023-02-15 23:01:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:59,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60319858] [2023-02-15 23:01:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:59,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:01:59,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299517631] [2023-02-15 23:01:59,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:01:59,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:59,839 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) [2023-02-15 23:01:59,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-02-15 23:01:59,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:01:59,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:59,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:01:59,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-15 23:02:00,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-02-15 23:02:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:00,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60319858] [2023-02-15 23:02:00,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:00,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299517631] [2023-02-15 23:02:00,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299517631] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:00,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:00,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2023-02-15 23:02:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631096161] [2023-02-15 23:02:00,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:00,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 23:02:00,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 23:02:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:02:00,212 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-02-15 23:02:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:00,606 INFO L93 Difference]: Finished difference Result 940 states and 1237 transitions. [2023-02-15 23:02:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 23:02:00,607 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 97 [2023-02-15 23:02:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:00,609 INFO L225 Difference]: With dead ends: 940 [2023-02-15 23:02:00,609 INFO L226 Difference]: Without dead ends: 519 [2023-02-15 23:02:00,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-02-15 23:02:00,610 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 90 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:00,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 570 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-02-15 23:02:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 484. [2023-02-15 23:02:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 375 states have (on average 1.1813333333333333) internal successors, (443), 377 states have internal predecessors, (443), 67 states have call successors, (67), 27 states have call predecessors, (67), 34 states have return successors, (119), 79 states have call predecessors, (119), 67 states have call successors, (119) [2023-02-15 23:02:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 629 transitions. [2023-02-15 23:02:00,640 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 629 transitions. Word has length 97 [2023-02-15 23:02:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:00,640 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 629 transitions. [2023-02-15 23:02:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 10 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2023-02-15 23:02:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 629 transitions. [2023-02-15 23:02:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-02-15 23:02:00,642 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:00,642 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:00,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:00,846 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,SelfDestructingSolverStorable34 [2023-02-15 23:02:00,846 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1255466727, now seen corresponding path program 1 times [2023-02-15 23:02:00,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:00,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341247396] [2023-02-15 23:02:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:00,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:00,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:00,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881430488] [2023-02-15 23:02:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:00,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:00,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:00,853 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) [2023-02-15 23:02:00,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-02-15 23:02:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:00,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:02:00,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 23:02:00,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 23:02:01,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:01,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341247396] [2023-02-15 23:02:01,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:01,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881430488] [2023-02-15 23:02:01,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881430488] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:01,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:01,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 23:02:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231683456] [2023-02-15 23:02:01,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:01,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:02:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:01,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:02:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:02:01,073 INFO L87 Difference]: Start difference. First operand 484 states and 629 transitions. Second operand has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:01,324 INFO L93 Difference]: Finished difference Result 655 states and 849 transitions. [2023-02-15 23:02:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:02:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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 107 [2023-02-15 23:02:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:01,327 INFO L225 Difference]: With dead ends: 655 [2023-02-15 23:02:01,327 INFO L226 Difference]: Without dead ends: 652 [2023-02-15 23:02:01,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-02-15 23:02:01,327 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 149 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:01,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 403 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-02-15 23:02:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 633. [2023-02-15 23:02:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 493 states have (on average 1.1906693711967546) internal successors, (587), 495 states have internal predecessors, (587), 90 states have call successors, (90), 33 states have call predecessors, (90), 42 states have return successors, (158), 104 states have call predecessors, (158), 90 states have call successors, (158) [2023-02-15 23:02:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 835 transitions. [2023-02-15 23:02:01,359 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 835 transitions. Word has length 107 [2023-02-15 23:02:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 835 transitions. [2023-02-15 23:02:01,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 835 transitions. [2023-02-15 23:02:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-15 23:02:01,361 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:01,361 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:01,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:01,565 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,SelfDestructingSolverStorable35 [2023-02-15 23:02:01,565 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1905506534, now seen corresponding path program 2 times [2023-02-15 23:02:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:01,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037503117] [2023-02-15 23:02:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:01,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:01,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632305605] [2023-02-15 23:02:01,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:01,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:01,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:01,572 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) [2023-02-15 23:02:01,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-02-15 23:02:01,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:01,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:01,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 23:02:01,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-02-15 23:02:01,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:01,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:01,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037503117] [2023-02-15 23:02:01,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:01,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632305605] [2023-02-15 23:02:01,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632305605] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:01,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:01,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 23:02:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613841389] [2023-02-15 23:02:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:01,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:02:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:02:01,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:02:01,665 INFO L87 Difference]: Start difference. First operand 633 states and 835 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-02-15 23:02:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:01,725 INFO L93 Difference]: Finished difference Result 1010 states and 1341 transitions. [2023-02-15 23:02:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 23:02:01,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 113 [2023-02-15 23:02:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:01,727 INFO L225 Difference]: With dead ends: 1010 [2023-02-15 23:02:01,727 INFO L226 Difference]: Without dead ends: 551 [2023-02-15 23:02:01,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 23:02:01,729 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 23 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:01,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 169 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:02:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-02-15 23:02:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 550. [2023-02-15 23:02:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 429 states have (on average 1.17016317016317) internal successors, (502), 431 states have internal predecessors, (502), 75 states have call successors, (75), 30 states have call predecessors, (75), 38 states have return successors, (129), 88 states have call predecessors, (129), 75 states have call successors, (129) [2023-02-15 23:02:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 706 transitions. [2023-02-15 23:02:01,743 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 706 transitions. Word has length 113 [2023-02-15 23:02:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:01,744 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 706 transitions. [2023-02-15 23:02:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2023-02-15 23:02:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 706 transitions. [2023-02-15 23:02:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-02-15 23:02:01,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:01,745 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 7, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:01,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-02-15 23:02:01,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:01,949 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash -622888842, now seen corresponding path program 1 times [2023-02-15 23:02:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:01,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946885904] [2023-02-15 23:02:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:01,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:01,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:01,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476780826] [2023-02-15 23:02:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:01,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:01,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:01,957 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) [2023-02-15 23:02:01,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-02-15 23:02:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:02,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 23:02:02,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-15 23:02:02,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-15 23:02:02,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:02,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946885904] [2023-02-15 23:02:02,708 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:02,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476780826] [2023-02-15 23:02:02,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476780826] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:02,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:02,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-02-15 23:02:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171153125] [2023-02-15 23:02:02,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:02,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 23:02:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 23:02:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-02-15 23:02:02,709 INFO L87 Difference]: Start difference. First operand 550 states and 706 transitions. Second operand has 20 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 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) [2023-02-15 23:02:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:04,677 INFO L93 Difference]: Finished difference Result 970 states and 1256 transitions. [2023-02-15 23:02:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 23:02:04,678 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 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 115 [2023-02-15 23:02:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:04,680 INFO L225 Difference]: With dead ends: 970 [2023-02-15 23:02:04,680 INFO L226 Difference]: Without dead ends: 566 [2023-02-15 23:02:04,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:02:04,682 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 133 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:04,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 916 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 23:02:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2023-02-15 23:02:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 552. [2023-02-15 23:02:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.1597222222222223) internal successors, (501), 434 states have internal predecessors, (501), 72 states have call successors, (72), 31 states have call predecessors, (72), 40 states have return successors, (122), 86 states have call predecessors, (122), 72 states have call successors, (122) [2023-02-15 23:02:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 695 transitions. [2023-02-15 23:02:04,696 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 695 transitions. Word has length 115 [2023-02-15 23:02:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:04,697 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 695 transitions. [2023-02-15 23:02:04,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.529411764705882) internal successors, (77), 16 states have internal predecessors, (77), 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) [2023-02-15 23:02:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 695 transitions. [2023-02-15 23:02:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-15 23:02:04,698 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:04,698 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 4, 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] [2023-02-15 23:02:04,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-02-15 23:02:04,902 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,SelfDestructingSolverStorable37 [2023-02-15 23:02:04,902 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 343501197, now seen corresponding path program 1 times [2023-02-15 23:02:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:04,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245242593] [2023-02-15 23:02:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:04,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:04,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985996510] [2023-02-15 23:02:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:04,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:04,917 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) [2023-02-15 23:02:04,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-02-15 23:02:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 23:02:04,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-02-15 23:02:05,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 84 proven. 23 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-02-15 23:02:10,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245242593] [2023-02-15 23:02:10,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985996510] [2023-02-15 23:02:10,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985996510] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:10,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:10,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2023-02-15 23:02:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163169051] [2023-02-15 23:02:10,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 23:02:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 23:02:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=890, Unknown=3, NotChecked=0, Total=992 [2023-02-15 23:02:10,965 INFO L87 Difference]: Start difference. First operand 552 states and 695 transitions. Second operand has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 23:02:16,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-02-15 23:02:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:17,469 INFO L93 Difference]: Finished difference Result 1421 states and 1878 transitions. [2023-02-15 23:02:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 23:02:17,470 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 120 [2023-02-15 23:02:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:17,474 INFO L225 Difference]: With dead ends: 1421 [2023-02-15 23:02:17,474 INFO L226 Difference]: Without dead ends: 1041 [2023-02-15 23:02:17,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=324, Invalid=2535, Unknown=3, NotChecked=0, Total=2862 [2023-02-15 23:02:17,479 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 218 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:17,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1147 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1678 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-02-15 23:02:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-02-15 23:02:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 851. [2023-02-15 23:02:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 669 states have (on average 1.201793721973094) internal successors, (804), 669 states have internal predecessors, (804), 122 states have call successors, (122), 42 states have call predecessors, (122), 52 states have return successors, (205), 139 states have call predecessors, (205), 122 states have call successors, (205) [2023-02-15 23:02:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1131 transitions. [2023-02-15 23:02:17,526 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1131 transitions. Word has length 120 [2023-02-15 23:02:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1131 transitions. [2023-02-15 23:02:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 3.2142857142857144) internal successors, (90), 28 states have internal predecessors, (90), 13 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-15 23:02:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1131 transitions. [2023-02-15 23:02:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-02-15 23:02:17,527 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:17,527 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 7, 7, 7, 7, 7, 5, 5, 5, 4, 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] [2023-02-15 23:02:17,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:17,732 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,SelfDestructingSolverStorable38 [2023-02-15 23:02:17,732 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:17,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1667958899, now seen corresponding path program 2 times [2023-02-15 23:02:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:17,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917085847] [2023-02-15 23:02:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:17,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:17,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:17,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332507996] [2023-02-15 23:02:17,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:17,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:17,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:17,739 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) [2023-02-15 23:02:17,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-02-15 23:02:17,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:17,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:17,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 23:02:17,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 241 proven. 10 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-02-15 23:02:17,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 97 proven. 46 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-02-15 23:02:18,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:18,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917085847] [2023-02-15 23:02:18,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:18,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332507996] [2023-02-15 23:02:18,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332507996] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:18,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:18,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2023-02-15 23:02:18,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602535749] [2023-02-15 23:02:18,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:18,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 23:02:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 23:02:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:02:18,024 INFO L87 Difference]: Start difference. First operand 851 states and 1131 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 23:02:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:18,305 INFO L93 Difference]: Finished difference Result 1638 states and 2192 transitions. [2023-02-15 23:02:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 23:02:18,305 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 140 [2023-02-15 23:02:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:18,308 INFO L225 Difference]: With dead ends: 1638 [2023-02-15 23:02:18,308 INFO L226 Difference]: Without dead ends: 885 [2023-02-15 23:02:18,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 254 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-02-15 23:02:18,311 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 82 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:18,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 559 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-02-15 23:02:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 859. [2023-02-15 23:02:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 674 states have (on average 1.198813056379822) internal successors, (808), 676 states have internal predecessors, (808), 123 states have call successors, (123), 44 states have call predecessors, (123), 54 states have return successors, (202), 138 states have call predecessors, (202), 123 states have call successors, (202) [2023-02-15 23:02:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1133 transitions. [2023-02-15 23:02:18,341 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1133 transitions. Word has length 140 [2023-02-15 23:02:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:18,341 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1133 transitions. [2023-02-15 23:02:18,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 11 states have internal predecessors, (60), 8 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 23:02:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1133 transitions. [2023-02-15 23:02:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-15 23:02:18,342 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:18,343 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:18,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:18,546 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,SelfDestructingSolverStorable39 [2023-02-15 23:02:18,547 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -250945720, now seen corresponding path program 1 times [2023-02-15 23:02:18,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917855911] [2023-02-15 23:02:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:18,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:18,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469087267] [2023-02-15 23:02:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:18,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:18,554 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) [2023-02-15 23:02:18,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-15 23:02:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:02:18,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-02-15 23:02:18,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-02-15 23:02:18,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:18,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917855911] [2023-02-15 23:02:18,811 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:18,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469087267] [2023-02-15 23:02:18,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469087267] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:18,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:18,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-15 23:02:18,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425778276] [2023-02-15 23:02:18,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:18,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 23:02:18,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:18,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 23:02:18,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:18,812 INFO L87 Difference]: Start difference. First operand 859 states and 1133 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:19,001 INFO L93 Difference]: Finished difference Result 866 states and 1133 transitions. [2023-02-15 23:02:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 23:02:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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 126 [2023-02-15 23:02:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:19,005 INFO L225 Difference]: With dead ends: 866 [2023-02-15 23:02:19,005 INFO L226 Difference]: Without dead ends: 865 [2023-02-15 23:02:19,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-02-15 23:02:19,006 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 127 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:19,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 344 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-02-15 23:02:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 859. [2023-02-15 23:02:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 674 states have (on average 1.1943620178041543) internal successors, (805), 676 states have internal predecessors, (805), 123 states have call successors, (123), 44 states have call predecessors, (123), 54 states have return successors, (202), 138 states have call predecessors, (202), 123 states have call successors, (202) [2023-02-15 23:02:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1130 transitions. [2023-02-15 23:02:19,045 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1130 transitions. Word has length 126 [2023-02-15 23:02:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:19,046 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1130 transitions. [2023-02-15 23:02:19,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1130 transitions. [2023-02-15 23:02:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-15 23:02:19,047 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:19,047 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 4, 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] [2023-02-15 23:02:19,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:19,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:19,252 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:19,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1285538565, now seen corresponding path program 2 times [2023-02-15 23:02:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:19,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118638040] [2023-02-15 23:02:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:19,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413920099] [2023-02-15 23:02:19,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:19,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:19,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:19,259 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) [2023-02-15 23:02:19,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-02-15 23:02:19,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:19,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:19,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:02:19,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 146 proven. 7 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-02-15 23:02:19,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-15 23:02:19,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118638040] [2023-02-15 23:02:19,481 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:19,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413920099] [2023-02-15 23:02:19,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413920099] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:19,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:19,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2023-02-15 23:02:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904252198] [2023-02-15 23:02:19,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 23:02:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 23:02:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-02-15 23:02:19,482 INFO L87 Difference]: Start difference. First operand 859 states and 1130 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) [2023-02-15 23:02:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:19,664 INFO L93 Difference]: Finished difference Result 1501 states and 2014 transitions. [2023-02-15 23:02:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:02:19,665 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 130 [2023-02-15 23:02:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:19,668 INFO L225 Difference]: With dead ends: 1501 [2023-02-15 23:02:19,668 INFO L226 Difference]: Without dead ends: 855 [2023-02-15 23:02:19,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:02:19,672 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 65 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:19,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 395 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-02-15 23:02:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 848. [2023-02-15 23:02:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 665 states have (on average 1.193984962406015) internal successors, (794), 667 states have internal predecessors, (794), 122 states have call successors, (122), 44 states have call predecessors, (122), 53 states have return successors, (199), 136 states have call predecessors, (199), 122 states have call successors, (199) [2023-02-15 23:02:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1115 transitions. [2023-02-15 23:02:19,707 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1115 transitions. Word has length 130 [2023-02-15 23:02:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:19,708 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1115 transitions. [2023-02-15 23:02:19,708 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) [2023-02-15 23:02:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1115 transitions. [2023-02-15 23:02:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-15 23:02:19,709 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:19,709 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 9, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2023-02-15 23:02:19,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:19,913 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,SelfDestructingSolverStorable41 [2023-02-15 23:02:19,913 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash 477473427, now seen corresponding path program 3 times [2023-02-15 23:02:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032026018] [2023-02-15 23:02:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:19,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:19,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278579395] [2023-02-15 23:02:19,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:19,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:19,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:19,922 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) [2023-02-15 23:02:19,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-02-15 23:02:19,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-15 23:02:19,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:19,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:02:19,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-02-15 23:02:19,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:19,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:19,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032026018] [2023-02-15 23:02:19,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:19,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278579395] [2023-02-15 23:02:19,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278579395] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:19,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:19,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 23:02:19,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607910771] [2023-02-15 23:02:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:19,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:02:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:02:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:02:19,993 INFO L87 Difference]: Start difference. First operand 848 states and 1115 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-02-15 23:02:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:20,092 INFO L93 Difference]: Finished difference Result 872 states and 1142 transitions. [2023-02-15 23:02:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:02:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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 134 [2023-02-15 23:02:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:20,095 INFO L225 Difference]: With dead ends: 872 [2023-02-15 23:02:20,095 INFO L226 Difference]: Without dead ends: 871 [2023-02-15 23:02:20,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:02:20,113 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:20,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 165 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:20,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-02-15 23:02:20,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 857. [2023-02-15 23:02:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 674 states have (on average 1.1899109792284865) internal successors, (802), 673 states have internal predecessors, (802), 122 states have call successors, (122), 44 states have call predecessors, (122), 53 states have return successors, (199), 139 states have call predecessors, (199), 122 states have call successors, (199) [2023-02-15 23:02:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1123 transitions. [2023-02-15 23:02:20,142 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1123 transitions. Word has length 134 [2023-02-15 23:02:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1123 transitions. [2023-02-15 23:02:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-02-15 23:02:20,144 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1123 transitions. [2023-02-15 23:02:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-02-15 23:02:20,145 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:20,145 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:20,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:20,349 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -820050261, now seen corresponding path program 1 times [2023-02-15 23:02:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142791175] [2023-02-15 23:02:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:20,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861436571] [2023-02-15 23:02:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:20,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:20,356 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) [2023-02-15 23:02:20,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-02-15 23:02:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:20,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 23:02:20,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-02-15 23:02:20,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:20,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:20,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142791175] [2023-02-15 23:02:20,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:20,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861436571] [2023-02-15 23:02:20,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861436571] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:20,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:20,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 23:02:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908946975] [2023-02-15 23:02:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 23:02:20,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 23:02:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-15 23:02:20,496 INFO L87 Difference]: Start difference. First operand 857 states and 1123 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 23:02:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:20,714 INFO L93 Difference]: Finished difference Result 1487 states and 1982 transitions. [2023-02-15 23:02:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:02:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 136 [2023-02-15 23:02:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:20,717 INFO L225 Difference]: With dead ends: 1487 [2023-02-15 23:02:20,718 INFO L226 Difference]: Without dead ends: 852 [2023-02-15 23:02:20,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:20,720 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 52 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:20,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 387 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-02-15 23:02:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 846. [2023-02-15 23:02:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 665 states have (on average 1.1924812030075187) internal successors, (793), 665 states have internal predecessors, (793), 120 states have call successors, (120), 44 states have call predecessors, (120), 53 states have return successors, (192), 136 states have call predecessors, (192), 120 states have call successors, (192) [2023-02-15 23:02:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1105 transitions. [2023-02-15 23:02:20,748 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1105 transitions. Word has length 136 [2023-02-15 23:02:20,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:20,748 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1105 transitions. [2023-02-15 23:02:20,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 23:02:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1105 transitions. [2023-02-15 23:02:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-02-15 23:02:20,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:20,749 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:20,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:20,953 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,SelfDestructingSolverStorable43 [2023-02-15 23:02:20,954 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1099083764, now seen corresponding path program 1 times [2023-02-15 23:02:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399504346] [2023-02-15 23:02:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:20,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352655508] [2023-02-15 23:02:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:20,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:20,961 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) [2023-02-15 23:02:20,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-02-15 23:02:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:21,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 23:02:21,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-02-15 23:02:21,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 96 proven. 27 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 23:02:21,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399504346] [2023-02-15 23:02:21,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352655508] [2023-02-15 23:02:21,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352655508] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:21,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:21,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2023-02-15 23:02:21,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594098655] [2023-02-15 23:02:21,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:21,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 23:02:21,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:21,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 23:02:21,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:21,289 INFO L87 Difference]: Start difference. First operand 846 states and 1105 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:21,524 INFO L93 Difference]: Finished difference Result 1594 states and 2120 transitions. [2023-02-15 23:02:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:02:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 141 [2023-02-15 23:02:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:21,528 INFO L225 Difference]: With dead ends: 1594 [2023-02-15 23:02:21,528 INFO L226 Difference]: Without dead ends: 814 [2023-02-15 23:02:21,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 260 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-02-15 23:02:21,542 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 72 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:21,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 419 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:21,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-02-15 23:02:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 794. [2023-02-15 23:02:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 622 states have (on average 1.1913183279742765) internal successors, (741), 627 states have internal predecessors, (741), 112 states have call successors, (112), 44 states have call predecessors, (112), 52 states have return successors, (166), 122 states have call predecessors, (166), 112 states have call successors, (166) [2023-02-15 23:02:21,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1019 transitions. [2023-02-15 23:02:21,578 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1019 transitions. Word has length 141 [2023-02-15 23:02:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:21,578 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1019 transitions. [2023-02-15 23:02:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:21,579 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1019 transitions. [2023-02-15 23:02:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-15 23:02:21,582 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:21,582 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:21,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:21,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:21,786 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -175263733, now seen corresponding path program 2 times [2023-02-15 23:02:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:21,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636088871] [2023-02-15 23:02:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:21,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:21,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702951123] [2023-02-15 23:02:21,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:21,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:21,794 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) [2023-02-15 23:02:21,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-02-15 23:02:21,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:21,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:21,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:02:21,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-02-15 23:02:21,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:21,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636088871] [2023-02-15 23:02:21,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:21,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702951123] [2023-02-15 23:02:21,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702951123] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:21,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:21,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 23:02:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587350320] [2023-02-15 23:02:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:21,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:02:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:02:21,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:02:21,972 INFO L87 Difference]: Start difference. First operand 794 states and 1019 transitions. Second operand has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 23:02:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:22,041 INFO L93 Difference]: Finished difference Result 794 states and 1019 transitions. [2023-02-15 23:02:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:02:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 146 [2023-02-15 23:02:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:22,044 INFO L225 Difference]: With dead ends: 794 [2023-02-15 23:02:22,044 INFO L226 Difference]: Without dead ends: 793 [2023-02-15 23:02:22,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 23:02:22,044 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:22,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 200 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:02:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-02-15 23:02:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 782. [2023-02-15 23:02:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 613 states have (on average 1.169657422512235) internal successors, (717), 618 states have internal predecessors, (717), 110 states have call successors, (110), 44 states have call predecessors, (110), 52 states have return successors, (161), 119 states have call predecessors, (161), 110 states have call successors, (161) [2023-02-15 23:02:22,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 988 transitions. [2023-02-15 23:02:22,084 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 988 transitions. Word has length 146 [2023-02-15 23:02:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:22,084 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 988 transitions. [2023-02-15 23:02:22,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 23:02:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 988 transitions. [2023-02-15 23:02:22,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-02-15 23:02:22,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:22,085 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 9, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-02-15 23:02:22,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:22,289 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,SelfDestructingSolverStorable45 [2023-02-15 23:02:22,290 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:22,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:22,290 INFO L85 PathProgramCache]: Analyzing trace with hash 959118035, now seen corresponding path program 4 times [2023-02-15 23:02:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:22,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881782766] [2023-02-15 23:02:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:22,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:22,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011491833] [2023-02-15 23:02:22,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:02:22,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:22,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:22,298 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) [2023-02-15 23:02:22,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-02-15 23:02:22,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:02:22,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 23:02:22,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 124 proven. 6 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-02-15 23:02:22,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:22,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881782766] [2023-02-15 23:02:22,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:22,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011491833] [2023-02-15 23:02:22,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011491833] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:22,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:02:22,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-15 23:02:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832083707] [2023-02-15 23:02:22,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 23:02:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 23:02:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:22,768 INFO L87 Difference]: Start difference. First operand 782 states and 988 transitions. Second operand has 10 states, 8 states have (on average 6.125) internal successors, (49), 10 states have internal predecessors, (49), 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) [2023-02-15 23:02:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:23,003 INFO L93 Difference]: Finished difference Result 822 states and 1053 transitions. [2023-02-15 23:02:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 23:02:23,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 10 states have internal predecessors, (49), 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 154 [2023-02-15 23:02:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:23,006 INFO L225 Difference]: With dead ends: 822 [2023-02-15 23:02:23,006 INFO L226 Difference]: Without dead ends: 821 [2023-02-15 23:02:23,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:02:23,007 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:23,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 243 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-02-15 23:02:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 629. [2023-02-15 23:02:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 492 states have (on average 1.1341463414634145) internal successors, (558), 495 states have internal predecessors, (558), 82 states have call successors, (82), 38 states have call predecessors, (82), 48 states have return successors, (130), 95 states have call predecessors, (130), 82 states have call successors, (130) [2023-02-15 23:02:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 770 transitions. [2023-02-15 23:02:23,035 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 770 transitions. Word has length 154 [2023-02-15 23:02:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:23,035 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 770 transitions. [2023-02-15 23:02:23,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.125) internal successors, (49), 10 states have internal predecessors, (49), 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) [2023-02-15 23:02:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 770 transitions. [2023-02-15 23:02:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-02-15 23:02:23,036 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:23,036 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 9, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 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] [2023-02-15 23:02:23,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:23,241 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,SelfDestructingSolverStorable46 [2023-02-15 23:02:23,241 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:23,241 INFO L85 PathProgramCache]: Analyzing trace with hash 865899036, now seen corresponding path program 3 times [2023-02-15 23:02:23,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:23,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28124026] [2023-02-15 23:02:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:23,246 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887897229] [2023-02-15 23:02:23,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:23,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:23,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:23,248 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) [2023-02-15 23:02:23,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-02-15 23:02:23,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 23:02:23,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:23,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 23:02:23,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 156 proven. 17 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-02-15 23:02:23,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:23,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:23,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28124026] [2023-02-15 23:02:23,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:23,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887897229] [2023-02-15 23:02:23,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887897229] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:23,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:02:23,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-15 23:02:23,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242771331] [2023-02-15 23:02:23,987 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:23,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 23:02:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:23,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:02:23,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:02:23,987 INFO L87 Difference]: Start difference. First operand 629 states and 770 transitions. Second operand has 12 states, 10 states have (on average 5.8) internal successors, (58), 12 states have internal predecessors, (58), 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) [2023-02-15 23:02:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:24,559 INFO L93 Difference]: Finished difference Result 690 states and 871 transitions. [2023-02-15 23:02:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 23:02:24,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 12 states have internal predecessors, (58), 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 159 [2023-02-15 23:02:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:24,562 INFO L225 Difference]: With dead ends: 690 [2023-02-15 23:02:24,562 INFO L226 Difference]: Without dead ends: 689 [2023-02-15 23:02:24,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-02-15 23:02:24,563 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:24,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 359 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-02-15 23:02:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 644. [2023-02-15 23:02:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 504 states have (on average 1.130952380952381) internal successors, (570), 507 states have internal predecessors, (570), 82 states have call successors, (82), 38 states have call predecessors, (82), 51 states have return successors, (139), 98 states have call predecessors, (139), 82 states have call successors, (139) [2023-02-15 23:02:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 791 transitions. [2023-02-15 23:02:24,589 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 791 transitions. Word has length 159 [2023-02-15 23:02:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:24,589 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 791 transitions. [2023-02-15 23:02:24,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 12 states have internal predecessors, (58), 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) [2023-02-15 23:02:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 791 transitions. [2023-02-15 23:02:24,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-15 23:02:24,590 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:24,590 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, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:24,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:24,794 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,SelfDestructingSolverStorable47 [2023-02-15 23:02:24,794 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1657713853, now seen corresponding path program 1 times [2023-02-15 23:02:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:24,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598372729] [2023-02-15 23:02:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:24,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:24,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409182419] [2023-02-15 23:02:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:24,801 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) [2023-02-15 23:02:24,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-02-15 23:02:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 23:02:24,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-02-15 23:02:25,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2023-02-15 23:02:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598372729] [2023-02-15 23:02:25,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409182419] [2023-02-15 23:02:25,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409182419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:25,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:25,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2023-02-15 23:02:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487618869] [2023-02-15 23:02:25,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 23:02:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 23:02:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-02-15 23:02:25,361 INFO L87 Difference]: Start difference. First operand 644 states and 791 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-15 23:02:25,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:25,687 INFO L93 Difference]: Finished difference Result 1271 states and 1572 transitions. [2023-02-15 23:02:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:02:25,688 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 157 [2023-02-15 23:02:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:25,698 INFO L225 Difference]: With dead ends: 1271 [2023-02-15 23:02:25,698 INFO L226 Difference]: Without dead ends: 707 [2023-02-15 23:02:25,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 290 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-02-15 23:02:25,701 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 87 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:25,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 252 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-02-15 23:02:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 647. [2023-02-15 23:02:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 507 states have (on average 1.1222879684418146) internal successors, (569), 509 states have internal predecessors, (569), 82 states have call successors, (82), 38 states have call predecessors, (82), 51 states have return successors, (134), 99 states have call predecessors, (134), 82 states have call successors, (134) [2023-02-15 23:02:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 785 transitions. [2023-02-15 23:02:25,731 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 785 transitions. Word has length 157 [2023-02-15 23:02:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:25,731 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 785 transitions. [2023-02-15 23:02:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 11 states have call successors, (18), 1 states have call predecessors, (18), 4 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-15 23:02:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 785 transitions. [2023-02-15 23:02:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-02-15 23:02:25,732 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:25,732 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 9, 8, 8, 8, 8, 8, 8, 8, 7, 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] [2023-02-15 23:02:25,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-02-15 23:02:25,933 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,SelfDestructingSolverStorable48 [2023-02-15 23:02:25,933 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:25,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2132134637, now seen corresponding path program 5 times [2023-02-15 23:02:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:25,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780810309] [2023-02-15 23:02:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:25,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:25,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:25,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442141802] [2023-02-15 23:02:25,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:02:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:25,940 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) [2023-02-15 23:02:25,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-02-15 23:02:26,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-02-15 23:02:26,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:26,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 23:02:26,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 298 proven. 125 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-02-15 23:02:26,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 298 proven. 137 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-02-15 23:02:26,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:26,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780810309] [2023-02-15 23:02:26,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:26,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442141802] [2023-02-15 23:02:26,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442141802] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:26,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:26,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 27 [2023-02-15 23:02:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755977758] [2023-02-15 23:02:26,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:26,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 23:02:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 23:02:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2023-02-15 23:02:26,766 INFO L87 Difference]: Start difference. First operand 647 states and 785 transitions. Second operand has 27 states, 25 states have (on average 4.68) internal successors, (117), 24 states have internal predecessors, (117), 16 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (23), 11 states have call predecessors, (23), 16 states have call successors, (23) [2023-02-15 23:02:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:27,553 INFO L93 Difference]: Finished difference Result 1396 states and 1754 transitions. [2023-02-15 23:02:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 23:02:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.68) internal successors, (117), 24 states have internal predecessors, (117), 16 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (23), 11 states have call predecessors, (23), 16 states have call successors, (23) Word has length 174 [2023-02-15 23:02:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:27,556 INFO L225 Difference]: With dead ends: 1396 [2023-02-15 23:02:27,556 INFO L226 Difference]: Without dead ends: 855 [2023-02-15 23:02:27,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 317 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2023-02-15 23:02:27,558 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 212 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 941 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 23:02:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-02-15 23:02:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 695. [2023-02-15 23:02:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 543 states have (on average 1.1178637200736647) internal successors, (607), 546 states have internal predecessors, (607), 90 states have call successors, (90), 43 states have call predecessors, (90), 55 states have return successors, (149), 105 states have call predecessors, (149), 90 states have call successors, (149) [2023-02-15 23:02:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 846 transitions. [2023-02-15 23:02:27,582 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 846 transitions. Word has length 174 [2023-02-15 23:02:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:27,583 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 846 transitions. [2023-02-15 23:02:27,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.68) internal successors, (117), 24 states have internal predecessors, (117), 16 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (23), 11 states have call predecessors, (23), 16 states have call successors, (23) [2023-02-15 23:02:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 846 transitions. [2023-02-15 23:02:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-02-15 23:02:27,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:27,584 INFO L195 NwaCegarLoop]: trace histogram [18, 15, 9, 9, 9, 9, 9, 7, 7, 7, 6, 3, 3, 3, 3, 3, 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] [2023-02-15 23:02:27,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-02-15 23:02:27,788 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,SelfDestructingSolverStorable49 [2023-02-15 23:02:27,788 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2079015196, now seen corresponding path program 4 times [2023-02-15 23:02:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:27,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108932318] [2023-02-15 23:02:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:27,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:27,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814208885] [2023-02-15 23:02:27,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:02:27,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:27,800 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) [2023-02-15 23:02:27,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-02-15 23:02:27,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:02:27,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:27,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:02:27,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 444 proven. 15 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-02-15 23:02:27,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 198 proven. 109 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-02-15 23:02:28,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108932318] [2023-02-15 23:02:28,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:28,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814208885] [2023-02-15 23:02:28,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814208885] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:28,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2023-02-15 23:02:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96831610] [2023-02-15 23:02:28,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 23:02:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 23:02:28,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:28,160 INFO L87 Difference]: Start difference. First operand 695 states and 846 transitions. Second operand has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:28,410 INFO L93 Difference]: Finished difference Result 1220 states and 1509 transitions. [2023-02-15 23:02:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:02:28,411 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 179 [2023-02-15 23:02:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:28,414 INFO L225 Difference]: With dead ends: 1220 [2023-02-15 23:02:28,414 INFO L226 Difference]: Without dead ends: 753 [2023-02-15 23:02:28,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 336 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-02-15 23:02:28,415 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 91 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 372 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-02-15 23:02:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 711. [2023-02-15 23:02:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 555 states have (on average 1.117117117117117) internal successors, (620), 558 states have internal predecessors, (620), 93 states have call successors, (93), 44 states have call predecessors, (93), 56 states have return successors, (153), 108 states have call predecessors, (153), 93 states have call successors, (153) [2023-02-15 23:02:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 866 transitions. [2023-02-15 23:02:28,458 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 866 transitions. Word has length 179 [2023-02-15 23:02:28,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:28,458 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 866 transitions. [2023-02-15 23:02:28,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 866 transitions. [2023-02-15 23:02:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-02-15 23:02:28,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:28,460 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 9, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:28,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:28,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:28,661 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:28,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1806780323, now seen corresponding path program 2 times [2023-02-15 23:02:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:28,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26881384] [2023-02-15 23:02:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:28,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:28,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50531471] [2023-02-15 23:02:28,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:28,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:28,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:28,668 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) [2023-02-15 23:02:28,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-02-15 23:02:28,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:28,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:28,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:02:28,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-02-15 23:02:28,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2023-02-15 23:02:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26881384] [2023-02-15 23:02:28,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50531471] [2023-02-15 23:02:28,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50531471] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:28,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:28,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-15 23:02:28,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298640596] [2023-02-15 23:02:28,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:28,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 23:02:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 23:02:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-02-15 23:02:28,904 INFO L87 Difference]: Start difference. First operand 711 states and 866 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 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) [2023-02-15 23:02:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:29,059 INFO L93 Difference]: Finished difference Result 909 states and 1123 transitions. [2023-02-15 23:02:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 23:02:29,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 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 167 [2023-02-15 23:02:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:29,062 INFO L225 Difference]: With dead ends: 909 [2023-02-15 23:02:29,062 INFO L226 Difference]: Without dead ends: 908 [2023-02-15 23:02:29,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-02-15 23:02:29,064 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 83 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:29,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 315 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-02-15 23:02:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 844. [2023-02-15 23:02:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 665 states have (on average 1.124812030075188) internal successors, (748), 671 states have internal predecessors, (748), 116 states have call successors, (116), 44 states have call predecessors, (116), 56 states have return successors, (176), 128 states have call predecessors, (176), 116 states have call successors, (176) [2023-02-15 23:02:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1040 transitions. [2023-02-15 23:02:29,102 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1040 transitions. Word has length 167 [2023-02-15 23:02:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:29,103 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1040 transitions. [2023-02-15 23:02:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 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) [2023-02-15 23:02:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1040 transitions. [2023-02-15 23:02:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-02-15 23:02:29,104 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:29,104 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 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, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:29,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:29,312 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,SelfDestructingSolverStorable51 [2023-02-15 23:02:29,312 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1318755682, now seen corresponding path program 3 times [2023-02-15 23:02:29,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:29,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958583510] [2023-02-15 23:02:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:29,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:29,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513574569] [2023-02-15 23:02:29,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:29,319 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) [2023-02-15 23:02:29,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-02-15 23:02:29,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-15 23:02:29,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:29,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:02:29,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-02-15 23:02:29,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2023-02-15 23:02:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958583510] [2023-02-15 23:02:29,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513574569] [2023-02-15 23:02:29,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513574569] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:29,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:29,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 23:02:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591037859] [2023-02-15 23:02:29,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:29,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:02:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:02:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:02:29,533 INFO L87 Difference]: Start difference. First operand 844 states and 1040 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:29,830 INFO L93 Difference]: Finished difference Result 954 states and 1178 transitions. [2023-02-15 23:02:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:02:29,831 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 12 states have internal predecessors, (67), 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 177 [2023-02-15 23:02:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:29,833 INFO L225 Difference]: With dead ends: 954 [2023-02-15 23:02:29,833 INFO L226 Difference]: Without dead ends: 953 [2023-02-15 23:02:29,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-02-15 23:02:29,834 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 122 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 498 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2023-02-15 23:02:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 943. [2023-02-15 23:02:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 743 states have (on average 1.1278600269179004) internal successors, (838), 747 states have internal predecessors, (838), 127 states have call successors, (127), 49 states have call predecessors, (127), 66 states have return successors, (208), 146 states have call predecessors, (208), 127 states have call successors, (208) [2023-02-15 23:02:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1173 transitions. [2023-02-15 23:02:29,869 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1173 transitions. Word has length 177 [2023-02-15 23:02:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:29,869 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1173 transitions. [2023-02-15 23:02:29,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 12 states have internal predecessors, (67), 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) [2023-02-15 23:02:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1173 transitions. [2023-02-15 23:02:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-02-15 23:02:29,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:29,870 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-02-15 23:02:29,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:30,076 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash 967079394, now seen corresponding path program 2 times [2023-02-15 23:02:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:30,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420882095] [2023-02-15 23:02:30,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:30,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:30,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:30,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100677892] [2023-02-15 23:02:30,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:30,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:30,083 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) [2023-02-15 23:02:30,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-02-15 23:02:30,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:30,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 23:02:30,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-02-15 23:02:30,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2023-02-15 23:02:30,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:30,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420882095] [2023-02-15 23:02:30,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:30,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100677892] [2023-02-15 23:02:30,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100677892] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:30,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:30,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-02-15 23:02:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786129349] [2023-02-15 23:02:30,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:30,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 23:02:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:30,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 23:02:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:02:30,429 INFO L87 Difference]: Start difference. First operand 943 states and 1173 transitions. Second operand has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 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) [2023-02-15 23:02:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:30,758 INFO L93 Difference]: Finished difference Result 949 states and 1174 transitions. [2023-02-15 23:02:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 23:02:30,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 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 180 [2023-02-15 23:02:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:30,761 INFO L225 Difference]: With dead ends: 949 [2023-02-15 23:02:30,761 INFO L226 Difference]: Without dead ends: 948 [2023-02-15 23:02:30,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2023-02-15 23:02:30,763 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 141 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:30,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 477 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-02-15 23:02:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 943. [2023-02-15 23:02:30,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 743 states have (on average 1.117092866756393) internal successors, (830), 747 states have internal predecessors, (830), 127 states have call successors, (127), 49 states have call predecessors, (127), 66 states have return successors, (208), 146 states have call predecessors, (208), 127 states have call successors, (208) [2023-02-15 23:02:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1165 transitions. [2023-02-15 23:02:30,798 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1165 transitions. Word has length 180 [2023-02-15 23:02:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:30,798 INFO L495 AbstractCegarLoop]: Abstraction has 943 states and 1165 transitions. [2023-02-15 23:02:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 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) [2023-02-15 23:02:30,799 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1165 transitions. [2023-02-15 23:02:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-02-15 23:02:30,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:30,799 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 10, 6, 6, 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] [2023-02-15 23:02:30,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:31,003 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,SelfDestructingSolverStorable53 [2023-02-15 23:02:31,004 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash -754709664, now seen corresponding path program 4 times [2023-02-15 23:02:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:31,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086065491] [2023-02-15 23:02:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:31,009 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:31,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885674649] [2023-02-15 23:02:31,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:02:31,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:31,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:31,010 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) [2023-02-15 23:02:31,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-02-15 23:02:31,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:02:31,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:31,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:02:31,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 222 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2023-02-15 23:02:31,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 222 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-02-15 23:02:31,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:31,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086065491] [2023-02-15 23:02:31,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:31,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885674649] [2023-02-15 23:02:31,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885674649] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:31,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:31,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2023-02-15 23:02:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565990520] [2023-02-15 23:02:31,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 23:02:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 23:02:31,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-02-15 23:02:31,460 INFO L87 Difference]: Start difference. First operand 943 states and 1165 transitions. Second operand has 17 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 16 states have internal predecessors, (87), 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) [2023-02-15 23:02:31,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:31,822 INFO L93 Difference]: Finished difference Result 1480 states and 1828 transitions. [2023-02-15 23:02:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 23:02:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 16 states have internal predecessors, (87), 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 177 [2023-02-15 23:02:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:31,825 INFO L225 Difference]: With dead ends: 1480 [2023-02-15 23:02:31,825 INFO L226 Difference]: Without dead ends: 887 [2023-02-15 23:02:31,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 333 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-02-15 23:02:31,826 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:31,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 634 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-02-15 23:02:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 869. [2023-02-15 23:02:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 686 states have (on average 1.1093294460641399) internal successors, (761), 690 states have internal predecessors, (761), 114 states have call successors, (114), 45 states have call predecessors, (114), 62 states have return successors, (189), 133 states have call predecessors, (189), 114 states have call successors, (189) [2023-02-15 23:02:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1064 transitions. [2023-02-15 23:02:31,865 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1064 transitions. Word has length 177 [2023-02-15 23:02:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:31,865 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1064 transitions. [2023-02-15 23:02:31,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 16 states have internal predecessors, (87), 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) [2023-02-15 23:02:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1064 transitions. [2023-02-15 23:02:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-02-15 23:02:31,866 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:31,866 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, 4, 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] [2023-02-15 23:02:31,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:32,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:32,070 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -488351005, now seen corresponding path program 1 times [2023-02-15 23:02:32,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441705489] [2023-02-15 23:02:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:32,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:32,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642280714] [2023-02-15 23:02:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:32,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:32,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:32,078 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) [2023-02-15 23:02:32,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-02-15 23:02:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:32,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:02:32,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2023-02-15 23:02:32,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441705489] [2023-02-15 23:02:32,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642280714] [2023-02-15 23:02:32,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642280714] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:32,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:32,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:02:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141824902] [2023-02-15 23:02:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:32,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:02:32,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:02:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:02:32,178 INFO L87 Difference]: Start difference. First operand 869 states and 1064 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-02-15 23:02:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:32,227 INFO L93 Difference]: Finished difference Result 921 states and 1121 transitions. [2023-02-15 23:02:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:02:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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 198 [2023-02-15 23:02:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:32,230 INFO L225 Difference]: With dead ends: 921 [2023-02-15 23:02:32,230 INFO L226 Difference]: Without dead ends: 917 [2023-02-15 23:02:32,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:02:32,231 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:32,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 140 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:02:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-02-15 23:02:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 869. [2023-02-15 23:02:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 686 states have (on average 1.1093294460641399) internal successors, (761), 690 states have internal predecessors, (761), 114 states have call successors, (114), 45 states have call predecessors, (114), 62 states have return successors, (188), 133 states have call predecessors, (188), 114 states have call successors, (188) [2023-02-15 23:02:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1063 transitions. [2023-02-15 23:02:32,279 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1063 transitions. Word has length 198 [2023-02-15 23:02:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:32,280 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1063 transitions. [2023-02-15 23:02:32,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-02-15 23:02:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1063 transitions. [2023-02-15 23:02:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-02-15 23:02:32,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:32,282 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, 4, 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] [2023-02-15 23:02:32,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:32,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:32,487 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1782152131, now seen corresponding path program 2 times [2023-02-15 23:02:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150873942] [2023-02-15 23:02:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:32,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:32,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336277330] [2023-02-15 23:02:32,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:32,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:32,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:32,495 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) [2023-02-15 23:02:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-02-15 23:02:32,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:32,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:32,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:02:32,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-02-15 23:02:32,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 125 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-02-15 23:02:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150873942] [2023-02-15 23:02:32,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336277330] [2023-02-15 23:02:32,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336277330] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:32,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:32,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2023-02-15 23:02:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745576576] [2023-02-15 23:02:32,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 23:02:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 23:02:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:02:32,891 INFO L87 Difference]: Start difference. First operand 869 states and 1063 transitions. Second operand has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 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) [2023-02-15 23:02:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:33,322 INFO L93 Difference]: Finished difference Result 1467 states and 1807 transitions. [2023-02-15 23:02:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 23:02:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 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 208 [2023-02-15 23:02:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:33,325 INFO L225 Difference]: With dead ends: 1467 [2023-02-15 23:02:33,325 INFO L226 Difference]: Without dead ends: 875 [2023-02-15 23:02:33,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 395 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2023-02-15 23:02:33,327 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 115 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:33,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 410 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-02-15 23:02:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 863. [2023-02-15 23:02:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 680 states have (on average 1.1102941176470589) internal successors, (755), 686 states have internal predecessors, (755), 112 states have call successors, (112), 47 states have call predecessors, (112), 64 states have return successors, (178), 129 states have call predecessors, (178), 112 states have call successors, (178) [2023-02-15 23:02:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1045 transitions. [2023-02-15 23:02:33,360 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1045 transitions. Word has length 208 [2023-02-15 23:02:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:33,360 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1045 transitions. [2023-02-15 23:02:33,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.333333333333333) internal successors, (78), 16 states have internal predecessors, (78), 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) [2023-02-15 23:02:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1045 transitions. [2023-02-15 23:02:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-02-15 23:02:33,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:33,363 INFO L195 NwaCegarLoop]: trace histogram [22, 19, 11, 11, 11, 11, 11, 9, 9, 9, 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] [2023-02-15 23:02:33,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:33,567 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,SelfDestructingSolverStorable56 [2023-02-15 23:02:33,568 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1269759871, now seen corresponding path program 5 times [2023-02-15 23:02:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:33,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778614093] [2023-02-15 23:02:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:33,575 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:33,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105762410] [2023-02-15 23:02:33,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:02:33,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:33,577 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) [2023-02-15 23:02:33,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-02-15 23:02:33,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 23:02:33,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:33,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 23:02:33,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 451 proven. 63 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-02-15 23:02:33,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 451 proven. 69 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2023-02-15 23:02:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778614093] [2023-02-15 23:02:34,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:34,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105762410] [2023-02-15 23:02:34,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105762410] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:34,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:34,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 31 [2023-02-15 23:02:34,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081140365] [2023-02-15 23:02:34,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:34,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-15 23:02:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:34,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-15 23:02:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2023-02-15 23:02:34,246 INFO L87 Difference]: Start difference. First operand 863 states and 1045 transitions. Second operand has 31 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 23 states have internal predecessors, (115), 17 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (17), 9 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-15 23:02:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:35,197 INFO L93 Difference]: Finished difference Result 1593 states and 1958 transitions. [2023-02-15 23:02:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-15 23:02:35,197 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 23 states have internal predecessors, (115), 17 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (17), 9 states have call predecessors, (17), 11 states have call successors, (17) Word has length 225 [2023-02-15 23:02:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:35,200 INFO L225 Difference]: With dead ends: 1593 [2023-02-15 23:02:35,200 INFO L226 Difference]: Without dead ends: 1003 [2023-02-15 23:02:35,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 421 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=2781, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 23:02:35,202 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 178 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:35,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 747 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 23:02:35,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-02-15 23:02:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 935. [2023-02-15 23:02:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 735 states have (on average 1.107482993197279) internal successors, (814), 741 states have internal predecessors, (814), 121 states have call successors, (121), 53 states have call predecessors, (121), 72 states have return successors, (195), 140 states have call predecessors, (195), 121 states have call successors, (195) [2023-02-15 23:02:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1130 transitions. [2023-02-15 23:02:35,249 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1130 transitions. Word has length 225 [2023-02-15 23:02:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:35,249 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1130 transitions. [2023-02-15 23:02:35,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.7096774193548385) internal successors, (115), 23 states have internal predecessors, (115), 17 states have call successors, (24), 9 states have call predecessors, (24), 4 states have return successors, (17), 9 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-15 23:02:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1130 transitions. [2023-02-15 23:02:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-02-15 23:02:35,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:35,251 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-02-15 23:02:35,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:35,455 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,SelfDestructingSolverStorable57 [2023-02-15 23:02:35,455 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1591461325, now seen corresponding path program 6 times [2023-02-15 23:02:35,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:35,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802953754] [2023-02-15 23:02:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:35,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860040633] [2023-02-15 23:02:35,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:02:35,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:35,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:35,462 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) [2023-02-15 23:02:35,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-02-15 23:02:35,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-15 23:02:35,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:35,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 23:02:35,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 336 proven. 75 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2023-02-15 23:02:36,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:37,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802953754] [2023-02-15 23:02:37,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:37,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860040633] [2023-02-15 23:02:37,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860040633] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:37,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:02:37,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-02-15 23:02:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97331937] [2023-02-15 23:02:37,432 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 23:02:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 23:02:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=651, Unknown=1, NotChecked=0, Total=756 [2023-02-15 23:02:37,433 INFO L87 Difference]: Start difference. First operand 935 states and 1130 transitions. Second operand has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 9 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-15 23:02:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:44,129 INFO L93 Difference]: Finished difference Result 1278 states and 1661 transitions. [2023-02-15 23:02:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 23:02:44,130 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 9 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 214 [2023-02-15 23:02:44,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:44,132 INFO L225 Difference]: With dead ends: 1278 [2023-02-15 23:02:44,132 INFO L226 Difference]: Without dead ends: 1277 [2023-02-15 23:02:44,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=252, Invalid=1387, Unknown=1, NotChecked=0, Total=1640 [2023-02-15 23:02:44,133 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 128 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:44,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 713 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1153 Invalid, 2 Unknown, 0 Unchecked, 3.4s Time] [2023-02-15 23:02:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-02-15 23:02:44,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1049. [2023-02-15 23:02:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 823 states have (on average 1.1105710814094776) internal successors, (914), 826 states have internal predecessors, (914), 139 states have call successors, (139), 59 states have call predecessors, (139), 80 states have return successors, (240), 163 states have call predecessors, (240), 139 states have call successors, (240) [2023-02-15 23:02:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1293 transitions. [2023-02-15 23:02:44,176 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1293 transitions. Word has length 214 [2023-02-15 23:02:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:44,176 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1293 transitions. [2023-02-15 23:02:44,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 24 states have internal predecessors, (73), 9 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-15 23:02:44,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1293 transitions. [2023-02-15 23:02:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-02-15 23:02:44,178 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:44,178 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 11, 11, 11, 11, 11, 11, 11, 10, 10, 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] [2023-02-15 23:02:44,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:44,385 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,SelfDestructingSolverStorable58 [2023-02-15 23:02:44,385 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1956713491, now seen corresponding path program 7 times [2023-02-15 23:02:44,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:44,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022239621] [2023-02-15 23:02:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:44,391 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:44,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580280859] [2023-02-15 23:02:44,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:02:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:44,392 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) [2023-02-15 23:02:44,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-02-15 23:02:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:44,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 23:02:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 363 proven. 68 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-02-15 23:02:44,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 363 proven. 74 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2023-02-15 23:02:44,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:44,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022239621] [2023-02-15 23:02:44,992 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:44,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580280859] [2023-02-15 23:02:44,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580280859] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:44,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:44,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 20 [2023-02-15 23:02:44,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79695282] [2023-02-15 23:02:44,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:44,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 23:02:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 23:02:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-02-15 23:02:44,993 INFO L87 Difference]: Start difference. First operand 1049 states and 1293 transitions. Second operand has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 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) [2023-02-15 23:02:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:45,547 INFO L93 Difference]: Finished difference Result 2051 states and 2535 transitions. [2023-02-15 23:02:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 23:02:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 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 224 [2023-02-15 23:02:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:45,550 INFO L225 Difference]: With dead ends: 2051 [2023-02-15 23:02:45,550 INFO L226 Difference]: Without dead ends: 1136 [2023-02-15 23:02:45,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 416 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:02:45,552 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 110 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:45,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 763 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:02:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2023-02-15 23:02:45,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1042. [2023-02-15 23:02:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 817 states have (on average 1.1077111383108935) internal successors, (905), 822 states have internal predecessors, (905), 137 states have call successors, (137), 59 states have call predecessors, (137), 81 states have return successors, (221), 160 states have call predecessors, (221), 137 states have call successors, (221) [2023-02-15 23:02:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1263 transitions. [2023-02-15 23:02:45,598 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1263 transitions. Word has length 224 [2023-02-15 23:02:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:45,599 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1263 transitions. [2023-02-15 23:02:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.315789473684211) internal successors, (82), 18 states have internal predecessors, (82), 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) [2023-02-15 23:02:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1263 transitions. [2023-02-15 23:02:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-02-15 23:02:45,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:45,601 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 12, 9, 9, 9, 9, 9, 9, 9, 8, 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] [2023-02-15 23:02:45,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:45,806 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,SelfDestructingSolverStorable59 [2023-02-15 23:02:45,806 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1928816738, now seen corresponding path program 6 times [2023-02-15 23:02:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:45,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068698709] [2023-02-15 23:02:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:45,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:45,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470819082] [2023-02-15 23:02:45,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:02:45,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:45,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:45,815 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) [2023-02-15 23:02:45,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-02-15 23:02:45,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-02-15 23:02:45,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:45,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:02:45,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-02-15 23:02:45,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:02:45,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:45,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068698709] [2023-02-15 23:02:45,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:45,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470819082] [2023-02-15 23:02:45,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470819082] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:02:45,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:02:45,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 23:02:45,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326922788] [2023-02-15 23:02:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:02:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:02:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:02:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:02:45,927 INFO L87 Difference]: Start difference. First operand 1042 states and 1263 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) [2023-02-15 23:02:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:46,125 INFO L93 Difference]: Finished difference Result 1766 states and 2162 transitions. [2023-02-15 23:02:46,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:02:46,126 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 223 [2023-02-15 23:02:46,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:46,128 INFO L225 Difference]: With dead ends: 1766 [2023-02-15 23:02:46,128 INFO L226 Difference]: Without dead ends: 1021 [2023-02-15 23:02:46,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:02:46,130 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:46,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 304 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:46,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-02-15 23:02:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1012. [2023-02-15 23:02:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 796 states have (on average 1.1030150753768844) internal successors, (878), 798 states have internal predecessors, (878), 134 states have call successors, (134), 56 states have call predecessors, (134), 75 states have return successors, (206), 157 states have call predecessors, (206), 134 states have call successors, (206) [2023-02-15 23:02:46,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1218 transitions. [2023-02-15 23:02:46,169 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1218 transitions. Word has length 223 [2023-02-15 23:02:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:46,170 INFO L495 AbstractCegarLoop]: Abstraction has 1012 states and 1218 transitions. [2023-02-15 23:02:46,170 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) [2023-02-15 23:02:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1218 transitions. [2023-02-15 23:02:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-02-15 23:02:46,172 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:46,172 INFO L195 NwaCegarLoop]: trace histogram [24, 21, 12, 12, 12, 12, 12, 10, 10, 10, 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] [2023-02-15 23:02:46,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:46,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:46,377 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1417253282, now seen corresponding path program 7 times [2023-02-15 23:02:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:46,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872837521] [2023-02-15 23:02:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:46,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:46,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550855511] [2023-02-15 23:02:46,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:02:46,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:46,387 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) [2023-02-15 23:02:46,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-02-15 23:02:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:46,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:02:46,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 593 proven. 20 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2023-02-15 23:02:46,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 214 proven. 71 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2023-02-15 23:02:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872837521] [2023-02-15 23:02:46,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:46,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550855511] [2023-02-15 23:02:46,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550855511] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:46,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:46,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2023-02-15 23:02:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042909976] [2023-02-15 23:02:46,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 23:02:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 23:02:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-02-15 23:02:46,783 INFO L87 Difference]: Start difference. First operand 1012 states and 1218 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:47,128 INFO L93 Difference]: Finished difference Result 1064 states and 1270 transitions. [2023-02-15 23:02:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 23:02:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 243 [2023-02-15 23:02:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:47,130 INFO L225 Difference]: With dead ends: 1064 [2023-02-15 23:02:47,130 INFO L226 Difference]: Without dead ends: 1022 [2023-02-15 23:02:47,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 465 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-02-15 23:02:47,131 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 117 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 560 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-02-15 23:02:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1016. [2023-02-15 23:02:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 799 states have (on average 1.1026282853566958) internal successors, (881), 801 states have internal predecessors, (881), 134 states have call successors, (134), 57 states have call predecessors, (134), 76 states have return successors, (206), 157 states have call predecessors, (206), 134 states have call successors, (206) [2023-02-15 23:02:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1221 transitions. [2023-02-15 23:02:47,170 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1221 transitions. Word has length 243 [2023-02-15 23:02:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:47,170 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1221 transitions. [2023-02-15 23:02:47,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:02:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1221 transitions. [2023-02-15 23:02:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-02-15 23:02:47,171 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:47,172 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 13, 9, 9, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2023-02-15 23:02:47,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:47,381 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:47,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1803695718, now seen corresponding path program 5 times [2023-02-15 23:02:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:47,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542916707] [2023-02-15 23:02:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:47,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826464518] [2023-02-15 23:02:47,387 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:02:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:47,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:47,388 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) [2023-02-15 23:02:47,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-02-15 23:02:47,480 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-15 23:02:47,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:47,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 23:02:47,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 367 proven. 36 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-02-15 23:02:47,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 89 proven. 36 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2023-02-15 23:02:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542916707] [2023-02-15 23:02:47,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:47,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826464518] [2023-02-15 23:02:47,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826464518] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:47,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:47,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-02-15 23:02:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130155377] [2023-02-15 23:02:47,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 23:02:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 23:02:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-02-15 23:02:47,763 INFO L87 Difference]: Start difference. First operand 1016 states and 1221 transitions. Second operand has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-02-15 23:02:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:47,958 INFO L93 Difference]: Finished difference Result 1738 states and 2101 transitions. [2023-02-15 23:02:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 23:02:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 241 [2023-02-15 23:02:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:47,961 INFO L225 Difference]: With dead ends: 1738 [2023-02-15 23:02:47,961 INFO L226 Difference]: Without dead ends: 1024 [2023-02-15 23:02:47,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 458 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-02-15 23:02:47,962 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 74 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:47,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 428 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:02:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2023-02-15 23:02:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1016. [2023-02-15 23:02:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 799 states have (on average 1.1013767209011265) internal successors, (880), 801 states have internal predecessors, (880), 134 states have call successors, (134), 57 states have call predecessors, (134), 76 states have return successors, (206), 157 states have call predecessors, (206), 134 states have call successors, (206) [2023-02-15 23:02:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1220 transitions. [2023-02-15 23:02:48,007 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1220 transitions. Word has length 241 [2023-02-15 23:02:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1220 transitions. [2023-02-15 23:02:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.555555555555555) internal successors, (82), 18 states have internal predecessors, (82), 8 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-02-15 23:02:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1220 transitions. [2023-02-15 23:02:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-02-15 23:02:48,009 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:48,009 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 14, 14, 14, 14, 14, 14, 14, 13, 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] [2023-02-15 23:02:48,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:48,215 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1408976359, now seen corresponding path program 8 times [2023-02-15 23:02:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:48,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740737626] [2023-02-15 23:02:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:48,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:48,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998361122] [2023-02-15 23:02:48,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:48,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:48,226 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) [2023-02-15 23:02:48,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-02-15 23:02:48,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:48,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 23:02:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2043 backedges. 940 proven. 69 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2023-02-15 23:02:48,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2043 backedges. 417 proven. 164 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2023-02-15 23:02:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740737626] [2023-02-15 23:02:48,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:48,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998361122] [2023-02-15 23:02:48,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998361122] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:48,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:02:48,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 19 [2023-02-15 23:02:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429918646] [2023-02-15 23:02:48,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:48,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 23:02:48,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 23:02:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-02-15 23:02:48,979 INFO L87 Difference]: Start difference. First operand 1016 states and 1220 transitions. Second operand has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2023-02-15 23:02:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:49,355 INFO L93 Difference]: Finished difference Result 2102 states and 2609 transitions. [2023-02-15 23:02:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 23:02:49,355 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 288 [2023-02-15 23:02:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:49,358 INFO L225 Difference]: With dead ends: 2102 [2023-02-15 23:02:49,358 INFO L226 Difference]: Without dead ends: 1178 [2023-02-15 23:02:49,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 547 SyntacticMatches, 11 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-02-15 23:02:49,360 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 93 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:49,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 357 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:49,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-02-15 23:02:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1023. [2023-02-15 23:02:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 805 states have (on average 1.1080745341614906) internal successors, (892), 806 states have internal predecessors, (892), 135 states have call successors, (135), 57 states have call predecessors, (135), 76 states have return successors, (209), 159 states have call predecessors, (209), 134 states have call successors, (209) [2023-02-15 23:02:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1236 transitions. [2023-02-15 23:02:49,409 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1236 transitions. Word has length 288 [2023-02-15 23:02:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:49,409 INFO L495 AbstractCegarLoop]: Abstraction has 1023 states and 1236 transitions. [2023-02-15 23:02:49,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2023-02-15 23:02:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1236 transitions. [2023-02-15 23:02:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-02-15 23:02:49,410 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:49,410 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 15, 15, 15, 15, 15, 15, 15, 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] [2023-02-15 23:02:49,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-02-15 23:02:49,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:49,615 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:02:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1572156423, now seen corresponding path program 9 times [2023-02-15 23:02:49,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:49,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700988555] [2023-02-15 23:02:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:49,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:02:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948989739] [2023-02-15 23:02:49,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:49,624 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) [2023-02-15 23:02:49,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-02-15 23:02:49,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-15 23:02:49,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:49,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 23:02:49,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 553 proven. 30 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2023-02-15 23:02:55,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700988555] [2023-02-15 23:02:56,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:02:56,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948989739] [2023-02-15 23:02:56,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948989739] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:56,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:02:56,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-15 23:02:56,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861562357] [2023-02-15 23:02:56,182 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 23:02:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 23:02:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=145, Unknown=4, NotChecked=0, Total=210 [2023-02-15 23:02:56,183 INFO L87 Difference]: Start difference. First operand 1023 states and 1236 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-15 23:02:58,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:00,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:01,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:05,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:06,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:10,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:11,896 INFO L93 Difference]: Finished difference Result 1124 states and 1401 transitions. [2023-02-15 23:03:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:03:11,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 298 [2023-02-15 23:03:11,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:11,898 INFO L225 Difference]: With dead ends: 1124 [2023-02-15 23:03:11,898 INFO L226 Difference]: Without dead ends: 1123 [2023-02-15 23:03:11,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=106, Invalid=270, Unknown=4, NotChecked=0, Total=380 [2023-02-15 23:03:11,899 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 41 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:11,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 245 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 8 Unknown, 0 Unchecked, 11.9s Time] [2023-02-15 23:03:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-02-15 23:03:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1041. [2023-02-15 23:03:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 820 states have (on average 1.104878048780488) internal successors, (906), 820 states have internal predecessors, (906), 135 states have call successors, (135), 57 states have call predecessors, (135), 79 states have return successors, (219), 163 states have call predecessors, (219), 134 states have call successors, (219) [2023-02-15 23:03:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1260 transitions. [2023-02-15 23:03:11,946 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1260 transitions. Word has length 298 [2023-02-15 23:03:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:11,946 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1260 transitions. [2023-02-15 23:03:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-15 23:03:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1260 transitions. [2023-02-15 23:03:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-02-15 23:03:11,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:11,948 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 16, 16, 16, 16, 16, 16, 16, 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] [2023-02-15 23:03:11,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:12,153 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1885906521, now seen corresponding path program 10 times [2023-02-15 23:03:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665644296] [2023-02-15 23:03:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:12,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:12,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809237858] [2023-02-15 23:03:12,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:03:12,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:12,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:12,164 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) [2023-02-15 23:03:12,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-02-15 23:03:12,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:03:12,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:12,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 23:03:12,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2433 backedges. 1371 proven. 193 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2023-02-15 23:03:12,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2433 backedges. 659 proven. 454 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2023-02-15 23:03:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665644296] [2023-02-15 23:03:13,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809237858] [2023-02-15 23:03:13,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809237858] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:13,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:03:13,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 25 [2023-02-15 23:03:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016012464] [2023-02-15 23:03:13,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 23:03:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 23:03:13,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-02-15 23:03:13,408 INFO L87 Difference]: Start difference. First operand 1041 states and 1260 transitions. Second operand has 25 states, 21 states have (on average 6.285714285714286) internal successors, (132), 25 states have internal predecessors, (132), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) [2023-02-15 23:03:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:14,287 INFO L93 Difference]: Finished difference Result 2273 states and 2843 transitions. [2023-02-15 23:03:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:03:14,287 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 6.285714285714286) internal successors, (132), 25 states have internal predecessors, (132), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) Word has length 308 [2023-02-15 23:03:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:14,290 INFO L225 Difference]: With dead ends: 2273 [2023-02-15 23:03:14,290 INFO L226 Difference]: Without dead ends: 1368 [2023-02-15 23:03:14,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 589 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 23:03:14,292 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 152 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:14,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 820 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 23:03:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2023-02-15 23:03:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1230. [2023-02-15 23:03:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 975 states have (on average 1.1097435897435897) internal successors, (1082), 971 states have internal predecessors, (1082), 159 states have call successors, (159), 59 states have call predecessors, (159), 89 states have return successors, (290), 199 states have call predecessors, (290), 156 states have call successors, (290) [2023-02-15 23:03:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1531 transitions. [2023-02-15 23:03:14,357 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1531 transitions. Word has length 308 [2023-02-15 23:03:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:14,357 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1531 transitions. [2023-02-15 23:03:14,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 6.285714285714286) internal successors, (132), 25 states have internal predecessors, (132), 17 states have call successors, (27), 2 states have call predecessors, (27), 10 states have return successors, (28), 12 states have call predecessors, (28), 17 states have call successors, (28) [2023-02-15 23:03:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1531 transitions. [2023-02-15 23:03:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-02-15 23:03:14,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:14,359 INFO L195 NwaCegarLoop]: trace histogram [32, 29, 19, 19, 19, 19, 17, 17, 17, 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] [2023-02-15 23:03:14,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:14,563 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,SelfDestructingSolverStorable65 [2023-02-15 23:03:14,564 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:14,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1978106279, now seen corresponding path program 11 times [2023-02-15 23:03:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:14,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479742153] [2023-02-15 23:03:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:14,571 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:14,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087194068] [2023-02-15 23:03:14,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:03:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:14,573 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) [2023-02-15 23:03:14,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-02-15 23:03:14,710 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-02-15 23:03:14,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:14,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 23:03:14,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2870 backedges. 680 proven. 432 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2023-02-15 23:03:15,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2870 backedges. 680 proven. 435 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2023-02-15 23:03:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479742153] [2023-02-15 23:03:15,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087194068] [2023-02-15 23:03:15,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087194068] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:15,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:03:15,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 32 [2023-02-15 23:03:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306038595] [2023-02-15 23:03:15,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 23:03:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 23:03:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:03:15,750 INFO L87 Difference]: Start difference. First operand 1230 states and 1531 transitions. Second operand has 32 states, 31 states have (on average 3.838709677419355) internal successors, (119), 28 states have internal predecessors, (119), 17 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2023-02-15 23:03:17,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:17,114 INFO L93 Difference]: Finished difference Result 3020 states and 4075 transitions. [2023-02-15 23:03:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-15 23:03:17,115 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.838709677419355) internal successors, (119), 28 states have internal predecessors, (119), 17 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 328 [2023-02-15 23:03:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:17,119 INFO L225 Difference]: With dead ends: 3020 [2023-02-15 23:03:17,119 INFO L226 Difference]: Without dead ends: 1947 [2023-02-15 23:03:17,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 610 SyntacticMatches, 21 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=439, Invalid=2641, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 23:03:17,123 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 325 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:17,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 735 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 23:03:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2023-02-15 23:03:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1406. [2023-02-15 23:03:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1118 states have (on average 1.114490161001789) internal successors, (1246), 1116 states have internal predecessors, (1246), 184 states have call successors, (184), 69 states have call predecessors, (184), 97 states have return successors, (378), 220 states have call predecessors, (378), 181 states have call successors, (378) [2023-02-15 23:03:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 1808 transitions. [2023-02-15 23:03:17,206 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 1808 transitions. Word has length 328 [2023-02-15 23:03:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:17,206 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 1808 transitions. [2023-02-15 23:03:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.838709677419355) internal successors, (119), 28 states have internal predecessors, (119), 17 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2023-02-15 23:03:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 1808 transitions. [2023-02-15 23:03:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-02-15 23:03:17,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:17,208 INFO L195 NwaCegarLoop]: trace histogram [29, 28, 16, 13, 13, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2023-02-15 23:03:17,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:17,414 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,SelfDestructingSolverStorable66 [2023-02-15 23:03:17,414 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1558776128, now seen corresponding path program 6 times [2023-02-15 23:03:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:17,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839003455] [2023-02-15 23:03:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:17,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:17,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:17,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505500673] [2023-02-15 23:03:17,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:03:17,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:17,424 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) [2023-02-15 23:03:17,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-02-15 23:03:17,494 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-02-15 23:03:17,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:17,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:03:17,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 100 proven. 46 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2023-02-15 23:03:17,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 100 proven. 46 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2023-02-15 23:03:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:17,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839003455] [2023-02-15 23:03:17,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:17,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505500673] [2023-02-15 23:03:17,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505500673] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:17,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:03:17,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-02-15 23:03:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755710490] [2023-02-15 23:03:17,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:17,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:03:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:03:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:03:17,856 INFO L87 Difference]: Start difference. First operand 1406 states and 1808 transitions. Second operand has 16 states, 15 states have (on average 5.266666666666667) internal successors, (79), 12 states have internal predecessors, (79), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-02-15 23:03:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:18,172 INFO L93 Difference]: Finished difference Result 1654 states and 2141 transitions. [2023-02-15 23:03:18,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:03:18,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.266666666666667) internal successors, (79), 12 states have internal predecessors, (79), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 315 [2023-02-15 23:03:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:18,176 INFO L225 Difference]: With dead ends: 1654 [2023-02-15 23:03:18,176 INFO L226 Difference]: Without dead ends: 1653 [2023-02-15 23:03:18,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-02-15 23:03:18,177 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:18,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 565 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:03:18,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2023-02-15 23:03:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1607. [2023-02-15 23:03:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1276 states have (on average 1.121473354231975) internal successors, (1431), 1267 states have internal predecessors, (1431), 212 states have call successors, (212), 77 states have call predecessors, (212), 113 states have return successors, (437), 262 states have call predecessors, (437), 209 states have call successors, (437) [2023-02-15 23:03:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2080 transitions. [2023-02-15 23:03:18,254 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2080 transitions. Word has length 315 [2023-02-15 23:03:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:18,255 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2080 transitions. [2023-02-15 23:03:18,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.266666666666667) internal successors, (79), 12 states have internal predecessors, (79), 7 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-02-15 23:03:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2080 transitions. [2023-02-15 23:03:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-02-15 23:03:18,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:18,257 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-02-15 23:03:18,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-02-15 23:03:18,460 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,SelfDestructingSolverStorable67 [2023-02-15 23:03:18,460 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:18,460 INFO L85 PathProgramCache]: Analyzing trace with hash 959159986, now seen corresponding path program 1 times [2023-02-15 23:03:18,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:18,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165311435] [2023-02-15 23:03:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:18,467 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135604146] [2023-02-15 23:03:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:18,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:18,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:18,468 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) [2023-02-15 23:03:18,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-02-15 23:03:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:03:18,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2023-02-15 23:03:18,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:03:18,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:18,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165311435] [2023-02-15 23:03:18,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:18,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135604146] [2023-02-15 23:03:18,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135604146] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:03:18,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:03:18,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 23:03:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185719429] [2023-02-15 23:03:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:03:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 23:03:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 23:03:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:03:18,663 INFO L87 Difference]: Start difference. First operand 1607 states and 2080 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 23:03:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:18,845 INFO L93 Difference]: Finished difference Result 2481 states and 3254 transitions. [2023-02-15 23:03:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 23:03:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 317 [2023-02-15 23:03:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:18,849 INFO L225 Difference]: With dead ends: 2481 [2023-02-15 23:03:18,849 INFO L226 Difference]: Without dead ends: 1349 [2023-02-15 23:03:18,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:03:18,852 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 46 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 338 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:03:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-02-15 23:03:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1310. [2023-02-15 23:03:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1031 states have (on average 1.1057225994180406) internal successors, (1140), 1025 states have internal predecessors, (1140), 176 states have call successors, (176), 74 states have call predecessors, (176), 97 states have return successors, (294), 210 states have call predecessors, (294), 173 states have call successors, (294) [2023-02-15 23:03:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1610 transitions. [2023-02-15 23:03:18,913 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1610 transitions. Word has length 317 [2023-02-15 23:03:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:18,913 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1610 transitions. [2023-02-15 23:03:18,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 23:03:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1610 transitions. [2023-02-15 23:03:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-02-15 23:03:18,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:18,915 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 17, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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] [2023-02-15 23:03:18,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-02-15 23:03:19,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:19,116 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 242893842, now seen corresponding path program 2 times [2023-02-15 23:03:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143540541] [2023-02-15 23:03:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:19,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:19,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591845681] [2023-02-15 23:03:19,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:03:19,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:19,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:19,125 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) [2023-02-15 23:03:19,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-02-15 23:03:19,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 23:03:19,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:19,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:03:19,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2023-02-15 23:03:19,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:03:19,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:19,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143540541] [2023-02-15 23:03:19,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:19,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591845681] [2023-02-15 23:03:19,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591845681] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:03:19,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:03:19,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:03:19,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087389706] [2023-02-15 23:03:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:03:19,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:03:19,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:03:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:03:19,214 INFO L87 Difference]: Start difference. First operand 1310 states and 1610 transitions. Second operand has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-02-15 23:03:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:19,303 INFO L93 Difference]: Finished difference Result 1312 states and 1610 transitions. [2023-02-15 23:03:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:03:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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 327 [2023-02-15 23:03:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:19,305 INFO L225 Difference]: With dead ends: 1312 [2023-02-15 23:03:19,305 INFO L226 Difference]: Without dead ends: 1311 [2023-02-15 23:03:19,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:03:19,306 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:19,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 215 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:03:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-02-15 23:03:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1309. [2023-02-15 23:03:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1031 states have (on average 1.0940834141610087) internal successors, (1128), 1024 states have internal predecessors, (1128), 176 states have call successors, (176), 74 states have call predecessors, (176), 97 states have return successors, (294), 210 states have call predecessors, (294), 173 states have call successors, (294) [2023-02-15 23:03:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1598 transitions. [2023-02-15 23:03:19,372 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1598 transitions. Word has length 327 [2023-02-15 23:03:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:19,372 INFO L495 AbstractCegarLoop]: Abstraction has 1309 states and 1598 transitions. [2023-02-15 23:03:19,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-02-15 23:03:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1598 transitions. [2023-02-15 23:03:19,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-02-15 23:03:19,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:19,374 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 17, 16, 16, 16, 16, 16, 16, 16, 15, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:19,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:19,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-02-15 23:03:19,579 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash -883735553, now seen corresponding path program 8 times [2023-02-15 23:03:19,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:19,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340843717] [2023-02-15 23:03:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:19,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:19,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:19,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010990074] [2023-02-15 23:03:19,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:03:19,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:19,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:19,589 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) [2023-02-15 23:03:19,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-02-15 23:03:19,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:03:19,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:19,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:03:19,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 1144 proven. 44 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2023-02-15 23:03:19,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 166 proven. 66 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2023-02-15 23:03:20,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:20,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340843717] [2023-02-15 23:03:20,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:20,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010990074] [2023-02-15 23:03:20,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010990074] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:20,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:03:20,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-02-15 23:03:20,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469587432] [2023-02-15 23:03:20,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:20,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 23:03:20,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 23:03:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:03:20,025 INFO L87 Difference]: Start difference. First operand 1309 states and 1598 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:03:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:20,291 INFO L93 Difference]: Finished difference Result 2129 states and 2607 transitions. [2023-02-15 23:03:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 23:03:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 353 [2023-02-15 23:03:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:20,294 INFO L225 Difference]: With dead ends: 2129 [2023-02-15 23:03:20,294 INFO L226 Difference]: Without dead ends: 1208 [2023-02-15 23:03:20,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 688 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2023-02-15 23:03:20,296 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:20,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 386 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:03:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2023-02-15 23:03:20,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1204. [2023-02-15 23:03:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 952 states have (on average 1.093487394957983) internal successors, (1041), 943 states have internal predecessors, (1041), 154 states have call successors, (154), 70 states have call predecessors, (154), 93 states have return successors, (268), 190 states have call predecessors, (268), 151 states have call successors, (268) [2023-02-15 23:03:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1463 transitions. [2023-02-15 23:03:20,350 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1463 transitions. Word has length 353 [2023-02-15 23:03:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:20,350 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1463 transitions. [2023-02-15 23:03:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 15 states have internal predecessors, (79), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-02-15 23:03:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1463 transitions. [2023-02-15 23:03:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2023-02-15 23:03:20,352 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:20,352 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, 6, 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] [2023-02-15 23:03:20,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:20,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:20,565 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:20,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1311340197, now seen corresponding path program 3 times [2023-02-15 23:03:20,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:20,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654182620] [2023-02-15 23:03:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:20,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:20,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:20,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274625375] [2023-02-15 23:03:20,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:03:20,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:20,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:20,574 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) [2023-02-15 23:03:20,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-02-15 23:03:20,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 23:03:20,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:20,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-15 23:03:20,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 283 proven. 60 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2023-02-15 23:03:20,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654182620] [2023-02-15 23:03:26,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274625375] [2023-02-15 23:03:26,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274625375] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:26,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:03:26,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-15 23:03:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883981493] [2023-02-15 23:03:26,507 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 23:03:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 23:03:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=533, Unknown=3, NotChecked=0, Total=600 [2023-02-15 23:03:26,508 INFO L87 Difference]: Start difference. First operand 1204 states and 1463 transitions. Second operand has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-02-15 23:03:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:27,116 INFO L93 Difference]: Finished difference Result 1235 states and 1504 transitions. [2023-02-15 23:03:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:03:27,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 346 [2023-02-15 23:03:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:27,119 INFO L225 Difference]: With dead ends: 1235 [2023-02-15 23:03:27,119 INFO L226 Difference]: Without dead ends: 1234 [2023-02-15 23:03:27,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=110, Invalid=943, Unknown=3, NotChecked=0, Total=1056 [2023-02-15 23:03:27,120 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 50 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 641 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:03:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-02-15 23:03:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1201. [2023-02-15 23:03:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 949 states have (on average 1.0927291886195996) internal successors, (1037), 941 states have internal predecessors, (1037), 154 states have call successors, (154), 70 states have call predecessors, (154), 93 states have return successors, (268), 189 states have call predecessors, (268), 151 states have call successors, (268) [2023-02-15 23:03:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1459 transitions. [2023-02-15 23:03:27,170 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1459 transitions. Word has length 346 [2023-02-15 23:03:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:27,170 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1459 transitions. [2023-02-15 23:03:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.888888888888889) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-02-15 23:03:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1459 transitions. [2023-02-15 23:03:27,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-02-15 23:03:27,172 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:27,172 INFO L195 NwaCegarLoop]: trace histogram [34, 33, 17, 17, 17, 17, 17, 17, 17, 17, 16, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2023-02-15 23:03:27,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-02-15 23:03:27,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:27,373 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -94510691, now seen corresponding path program 9 times [2023-02-15 23:03:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:27,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180240053] [2023-02-15 23:03:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:27,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:27,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467818312] [2023-02-15 23:03:27,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:03:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:27,382 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) [2023-02-15 23:03:27,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-02-15 23:03:27,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-15 23:03:27,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:27,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 23:03:27,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3241 backedges. 797 proven. 69 refuted. 0 times theorem prover too weak. 2375 trivial. 0 not checked. [2023-02-15 23:03:31,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180240053] [2023-02-15 23:03:32,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467818312] [2023-02-15 23:03:32,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467818312] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:32,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:03:32,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-15 23:03:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764027335] [2023-02-15 23:03:32,258 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 23:03:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 23:03:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=342, Unknown=2, NotChecked=0, Total=420 [2023-02-15 23:03:32,259 INFO L87 Difference]: Start difference. First operand 1201 states and 1459 transitions. Second operand has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-15 23:03:34,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:40,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:46,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:47,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:03:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:50,394 INFO L93 Difference]: Finished difference Result 1357 states and 1744 transitions. [2023-02-15 23:03:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 23:03:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 363 [2023-02-15 23:03:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:50,405 INFO L225 Difference]: With dead ends: 1357 [2023-02-15 23:03:50,405 INFO L226 Difference]: Without dead ends: 1356 [2023-02-15 23:03:50,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=206, Invalid=722, Unknown=2, NotChecked=0, Total=930 [2023-02-15 23:03:50,406 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 34 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:50,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 426 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 11 Unknown, 0 Unchecked, 12.1s Time] [2023-02-15 23:03:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2023-02-15 23:03:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1219. [2023-02-15 23:03:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 964 states have (on average 1.0902489626556016) internal successors, (1051), 955 states have internal predecessors, (1051), 154 states have call successors, (154), 70 states have call predecessors, (154), 96 states have return successors, (279), 193 states have call predecessors, (279), 151 states have call successors, (279) [2023-02-15 23:03:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1484 transitions. [2023-02-15 23:03:50,459 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1484 transitions. Word has length 363 [2023-02-15 23:03:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:50,460 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1484 transitions. [2023-02-15 23:03:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 17 states have internal predecessors, (72), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-15 23:03:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1484 transitions. [2023-02-15 23:03:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-02-15 23:03:50,462 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:50,462 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 18, 18, 18, 18, 18, 18, 18, 17, 17, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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] [2023-02-15 23:03:50,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:50,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:50,668 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:50,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2031555203, now seen corresponding path program 10 times [2023-02-15 23:03:50,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:50,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844350713] [2023-02-15 23:03:50,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:50,676 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:50,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282129897] [2023-02-15 23:03:50,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:03:50,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:50,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:50,678 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) [2023-02-15 23:03:50,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-02-15 23:03:50,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:03:50,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:50,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 23:03:50,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 531 proven. 230 refuted. 0 times theorem prover too weak. 2716 trivial. 0 not checked. [2023-02-15 23:03:50,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 531 proven. 231 refuted. 0 times theorem prover too weak. 2715 trivial. 0 not checked. [2023-02-15 23:03:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844350713] [2023-02-15 23:03:51,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:51,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282129897] [2023-02-15 23:03:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282129897] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:51,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:03:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2023-02-15 23:03:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064877945] [2023-02-15 23:03:51,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 23:03:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 23:03:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-02-15 23:03:51,318 INFO L87 Difference]: Start difference. First operand 1219 states and 1484 transitions. Second operand has 17 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 10 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 7 states have call predecessors, (17), 10 states have call successors, (17) [2023-02-15 23:03:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:51,812 INFO L93 Difference]: Finished difference Result 2523 states and 3216 transitions. [2023-02-15 23:03:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 23:03:51,812 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 10 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 7 states have call predecessors, (17), 10 states have call successors, (17) Word has length 373 [2023-02-15 23:03:51,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:51,815 INFO L225 Difference]: With dead ends: 2523 [2023-02-15 23:03:51,815 INFO L226 Difference]: Without dead ends: 1680 [2023-02-15 23:03:51,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 725 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-02-15 23:03:51,817 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 203 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:51,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 407 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:03:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-02-15 23:03:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1444. [2023-02-15 23:03:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1138 states have (on average 1.0975395430579964) internal successors, (1249), 1129 states have internal predecessors, (1249), 197 states have call successors, (197), 79 states have call predecessors, (197), 104 states have return successors, (366), 235 states have call predecessors, (366), 194 states have call successors, (366) [2023-02-15 23:03:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1812 transitions. [2023-02-15 23:03:51,883 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1812 transitions. Word has length 373 [2023-02-15 23:03:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:51,883 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 1812 transitions. [2023-02-15 23:03:51,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.066666666666666) internal successors, (91), 16 states have internal predecessors, (91), 10 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 7 states have call predecessors, (17), 10 states have call successors, (17) [2023-02-15 23:03:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1812 transitions. [2023-02-15 23:03:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-02-15 23:03:51,891 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:51,891 INFO L195 NwaCegarLoop]: trace histogram [39, 36, 24, 24, 24, 24, 22, 22, 22, 21, 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] [2023-02-15 23:03:51,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:52,095 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,SelfDestructingSolverStorable73 [2023-02-15 23:03:52,096 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:03:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 190372671, now seen corresponding path program 12 times [2023-02-15 23:03:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:52,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538901160] [2023-02-15 23:03:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:52,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:03:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085283740] [2023-02-15 23:03:52,107 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:03:52,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:52,109 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) [2023-02-15 23:03:52,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-02-15 23:03:52,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-02-15 23:03:52,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:52,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 23:03:52,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4432 backedges. 1134 proven. 89 refuted. 0 times theorem prover too weak. 3209 trivial. 0 not checked. [2023-02-15 23:03:54,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:56,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:56,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538901160] [2023-02-15 23:03:56,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:03:56,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085283740] [2023-02-15 23:03:56,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085283740] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:56,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:03:56,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-15 23:03:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157623125] [2023-02-15 23:03:56,415 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 23:03:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 23:03:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-02-15 23:03:56,416 INFO L87 Difference]: Start difference. First operand 1444 states and 1812 transitions. Second operand has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-15 23:04:02,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 23:04:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:02,935 INFO L93 Difference]: Finished difference Result 1595 states and 2149 transitions. [2023-02-15 23:04:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 23:04:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 392 [2023-02-15 23:04:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:02,938 INFO L225 Difference]: With dead ends: 1595 [2023-02-15 23:04:02,938 INFO L226 Difference]: Without dead ends: 1594 [2023-02-15 23:04:02,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-02-15 23:04:02,939 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 40 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:02,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 474 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 594 Invalid, 2 Unknown, 0 Unchecked, 3.8s Time] [2023-02-15 23:04:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-02-15 23:04:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1459. [2023-02-15 23:04:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1150 states have (on average 1.0965217391304347) internal successors, (1261), 1141 states have internal predecessors, (1261), 197 states have call successors, (197), 79 states have call predecessors, (197), 107 states have return successors, (376), 238 states have call predecessors, (376), 194 states have call successors, (376) [2023-02-15 23:04:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1834 transitions. [2023-02-15 23:04:03,021 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1834 transitions. Word has length 392 [2023-02-15 23:04:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:03,022 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 1834 transitions. [2023-02-15 23:04:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.125) internal successors, (66), 17 states have internal predecessors, (66), 3 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-15 23:04:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1834 transitions. [2023-02-15 23:04:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-02-15 23:04:03,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:03,025 INFO L195 NwaCegarLoop]: trace histogram [38, 37, 20, 20, 20, 20, 20, 20, 20, 19, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-02-15 23:04:03,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2023-02-15 23:04:03,231 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:03,231 INFO L85 PathProgramCache]: Analyzing trace with hash 633817600, now seen corresponding path program 11 times [2023-02-15 23:04:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:03,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169525635] [2023-02-15 23:04:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:03,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:03,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622725427] [2023-02-15 23:04:03,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:04:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:03,240 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) [2023-02-15 23:04:03,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-02-15 23:04:03,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-15 23:04:03,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 23:04:03,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 1574 proven. 376 refuted. 0 times theorem prover too weak. 2195 trivial. 0 not checked. [2023-02-15 23:04:03,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 1574 proven. 432 refuted. 0 times theorem prover too weak. 2139 trivial. 0 not checked. [2023-02-15 23:04:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:05,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169525635] [2023-02-15 23:04:05,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:04:05,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622725427] [2023-02-15 23:04:05,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622725427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:05,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:04:05,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31] total 45 [2023-02-15 23:04:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519992254] [2023-02-15 23:04:05,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:05,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-02-15 23:04:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-02-15 23:04:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1799, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 23:04:05,288 INFO L87 Difference]: Start difference. First operand 1459 states and 1834 transitions. Second operand has 45 states, 43 states have (on average 4.023255813953488) internal successors, (173), 42 states have internal predecessors, (173), 24 states have call successors, (33), 5 states have call predecessors, (33), 11 states have return successors, (35), 21 states have call predecessors, (35), 20 states have call successors, (35) [2023-02-15 23:04:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:08,520 INFO L93 Difference]: Finished difference Result 3594 states and 5216 transitions. [2023-02-15 23:04:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-15 23:04:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 4.023255813953488) internal successors, (173), 42 states have internal predecessors, (173), 24 states have call successors, (33), 5 states have call predecessors, (33), 11 states have return successors, (35), 21 states have call predecessors, (35), 20 states have call successors, (35) Word has length 401 [2023-02-15 23:04:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:08,525 INFO L225 Difference]: With dead ends: 3594 [2023-02-15 23:04:08,525 INFO L226 Difference]: Without dead ends: 2532 [2023-02-15 23:04:08,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 755 SyntacticMatches, 10 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1037, Invalid=8275, Unknown=0, NotChecked=0, Total=9312 [2023-02-15 23:04:08,529 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 652 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 4767 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 5278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:08,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1589 Invalid, 5278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4767 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 23:04:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2023-02-15 23:04:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1849. [2023-02-15 23:04:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1454 states have (on average 1.0997248968363136) internal successors, (1599), 1446 states have internal predecessors, (1599), 265 states have call successors, (265), 87 states have call predecessors, (265), 125 states have return successors, (598), 315 states have call predecessors, (598), 261 states have call successors, (598) [2023-02-15 23:04:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2462 transitions. [2023-02-15 23:04:08,638 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2462 transitions. Word has length 401 [2023-02-15 23:04:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:08,639 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2462 transitions. [2023-02-15 23:04:08,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 4.023255813953488) internal successors, (173), 42 states have internal predecessors, (173), 24 states have call successors, (33), 5 states have call predecessors, (33), 11 states have return successors, (35), 21 states have call predecessors, (35), 20 states have call successors, (35) [2023-02-15 23:04:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2462 transitions. [2023-02-15 23:04:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-02-15 23:04:08,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:08,641 INFO L195 NwaCegarLoop]: trace histogram [40, 37, 25, 25, 25, 25, 23, 23, 23, 22, 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] [2023-02-15 23:04:08,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2023-02-15 23:04:08,842 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,SelfDestructingSolverStorable75 [2023-02-15 23:04:08,842 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1731598817, now seen corresponding path program 13 times [2023-02-15 23:04:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748136217] [2023-02-15 23:04:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:08,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:08,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425273355] [2023-02-15 23:04:08,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:04:08,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:08,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:08,852 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) [2023-02-15 23:04:08,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-02-15 23:04:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:09,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 23:04:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 858 proven. 180 refuted. 0 times theorem prover too weak. 3682 trivial. 0 not checked. [2023-02-15 23:04:09,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 858 proven. 181 refuted. 0 times theorem prover too weak. 3681 trivial. 0 not checked. [2023-02-15 23:04:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:09,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748136217] [2023-02-15 23:04:09,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:04:09,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425273355] [2023-02-15 23:04:09,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425273355] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:09,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:04:09,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 36 [2023-02-15 23:04:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9165433] [2023-02-15 23:04:09,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-15 23:04:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-15 23:04:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1111, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 23:04:09,815 INFO L87 Difference]: Start difference. First operand 1849 states and 2462 transitions. Second operand has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 31 states have internal predecessors, (124), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2023-02-15 23:04:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:10,975 INFO L93 Difference]: Finished difference Result 3923 states and 5244 transitions. [2023-02-15 23:04:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-15 23:04:10,975 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 31 states have internal predecessors, (124), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) Word has length 402 [2023-02-15 23:04:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:10,980 INFO L225 Difference]: With dead ends: 3923 [2023-02-15 23:04:10,980 INFO L226 Difference]: Without dead ends: 2263 [2023-02-15 23:04:10,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 761 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=518, Invalid=3514, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 23:04:10,983 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 214 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:10,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 946 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 23:04:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-02-15 23:04:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2202. [2023-02-15 23:04:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1739 states have (on average 1.100632547441058) internal successors, (1914), 1727 states have internal predecessors, (1914), 304 states have call successors, (304), 108 states have call predecessors, (304), 154 states have return successors, (661), 366 states have call predecessors, (661), 300 states have call successors, (661) [2023-02-15 23:04:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2879 transitions. [2023-02-15 23:04:11,109 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2879 transitions. Word has length 402 [2023-02-15 23:04:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:11,109 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 2879 transitions. [2023-02-15 23:04:11,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.4444444444444446) internal successors, (124), 31 states have internal predecessors, (124), 19 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2023-02-15 23:04:11,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2879 transitions. [2023-02-15 23:04:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-02-15 23:04:11,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:11,112 INFO L195 NwaCegarLoop]: trace histogram [43, 40, 27, 27, 27, 27, 25, 25, 25, 24, 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] [2023-02-15 23:04:11,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:11,317 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,SelfDestructingSolverStorable76 [2023-02-15 23:04:11,318 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash -820176577, now seen corresponding path program 14 times [2023-02-15 23:04:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:11,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673592727] [2023-02-15 23:04:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:11,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762289082] [2023-02-15 23:04:11,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:04:11,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:11,335 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) [2023-02-15 23:04:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-02-15 23:04:11,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:04:11,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:11,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 23:04:11,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5555 backedges. 2632 proven. 135 refuted. 0 times theorem prover too weak. 2788 trivial. 0 not checked. [2023-02-15 23:04:11,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5555 backedges. 1078 proven. 438 refuted. 0 times theorem prover too weak. 4039 trivial. 0 not checked. [2023-02-15 23:04:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673592727] [2023-02-15 23:04:12,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:04:12,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762289082] [2023-02-15 23:04:12,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762289082] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:12,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:04:12,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 23 [2023-02-15 23:04:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951197643] [2023-02-15 23:04:12,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:12,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 23:04:12,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 23:04:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-02-15 23:04:12,445 INFO L87 Difference]: Start difference. First operand 2202 states and 2879 transitions. Second operand has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-15 23:04:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:13,107 INFO L93 Difference]: Finished difference Result 4592 states and 6283 transitions. [2023-02-15 23:04:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:04:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) Word has length 442 [2023-02-15 23:04:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:13,112 INFO L225 Difference]: With dead ends: 4592 [2023-02-15 23:04:13,112 INFO L226 Difference]: Without dead ends: 2582 [2023-02-15 23:04:13,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 848 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 23:04:13,116 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 126 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:13,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 506 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:04:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2023-02-15 23:04:13,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2188. [2023-02-15 23:04:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1724 states have (on average 1.1009280742459397) internal successors, (1898), 1712 states have internal predecessors, (1898), 308 states have call successors, (308), 105 states have call predecessors, (308), 151 states have return successors, (678), 370 states have call predecessors, (678), 304 states have call successors, (678) [2023-02-15 23:04:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2884 transitions. [2023-02-15 23:04:13,255 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2884 transitions. Word has length 442 [2023-02-15 23:04:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:13,256 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 2884 transitions. [2023-02-15 23:04:13,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.333333333333333) internal successors, (112), 23 states have internal predecessors, (112), 14 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (21), 10 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-15 23:04:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2884 transitions. [2023-02-15 23:04:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-02-15 23:04:13,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:13,258 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 21, 15, 15, 15, 15, 15, 15, 15, 15, 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, 3, 2, 1, 1, 1, 1, 1] [2023-02-15 23:04:13,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:13,464 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:13,464 INFO L85 PathProgramCache]: Analyzing trace with hash 949038304, now seen corresponding path program 1 times [2023-02-15 23:04:13,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:13,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414784297] [2023-02-15 23:04:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:13,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:13,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:13,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001545823] [2023-02-15 23:04:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:13,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:13,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:13,474 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) [2023-02-15 23:04:13,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-02-15 23:04:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:13,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 23:04:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3624 backedges. 1110 proven. 46 refuted. 0 times theorem prover too weak. 2468 trivial. 0 not checked. [2023-02-15 23:04:13,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3624 backedges. 244 proven. 75 refuted. 0 times theorem prover too weak. 3305 trivial. 0 not checked. [2023-02-15 23:04:14,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414784297] [2023-02-15 23:04:14,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:04:14,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001545823] [2023-02-15 23:04:14,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001545823] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:14,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:04:14,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 21 [2023-02-15 23:04:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057802967] [2023-02-15 23:04:14,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:14,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 23:04:14,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 23:04:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-02-15 23:04:14,199 INFO L87 Difference]: Start difference. First operand 2188 states and 2884 transitions. Second operand has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2023-02-15 23:04:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:14,752 INFO L93 Difference]: Finished difference Result 4029 states and 5363 transitions. [2023-02-15 23:04:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 23:04:14,753 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) Word has length 407 [2023-02-15 23:04:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:14,757 INFO L225 Difference]: With dead ends: 4029 [2023-02-15 23:04:14,757 INFO L226 Difference]: Without dead ends: 2219 [2023-02-15 23:04:14,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 788 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=963, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 23:04:14,760 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 107 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:14,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 232 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:04:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2023-02-15 23:04:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2160. [2023-02-15 23:04:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 1716 states have (on average 1.097902097902098) internal successors, (1884), 1701 states have internal predecessors, (1884), 289 states have call successors, (289), 103 states have call predecessors, (289), 150 states have return successors, (616), 355 states have call predecessors, (616), 285 states have call successors, (616) [2023-02-15 23:04:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2789 transitions. [2023-02-15 23:04:14,897 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2789 transitions. Word has length 407 [2023-02-15 23:04:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:14,898 INFO L495 AbstractCegarLoop]: Abstraction has 2160 states and 2789 transitions. [2023-02-15 23:04:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.761904761904762) internal successors, (121), 21 states have internal predecessors, (121), 11 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2023-02-15 23:04:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2789 transitions. [2023-02-15 23:04:14,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-02-15 23:04:14,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:14,900 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 21, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2023-02-15 23:04:14,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:15,106 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1060375936, now seen corresponding path program 2 times [2023-02-15 23:04:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:15,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168348892] [2023-02-15 23:04:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:15,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:15,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161525591] [2023-02-15 23:04:15,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:04:15,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:15,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:15,117 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) [2023-02-15 23:04:15,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-02-15 23:04:15,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:04:15,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:15,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 23:04:15,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 2 proven. 132 refuted. 0 times theorem prover too weak. 3724 trivial. 0 not checked. [2023-02-15 23:04:15,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 2 proven. 132 refuted. 0 times theorem prover too weak. 3724 trivial. 0 not checked. [2023-02-15 23:04:15,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:15,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168348892] [2023-02-15 23:04:15,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 23:04:15,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161525591] [2023-02-15 23:04:15,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161525591] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:15,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 23:04:15,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-02-15 23:04:15,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842251440] [2023-02-15 23:04:15,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:15,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 23:04:15,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:15,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 23:04:15,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-02-15 23:04:15,684 INFO L87 Difference]: Start difference. First operand 2160 states and 2789 transitions. Second operand has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 22 states have internal predecessors, (112), 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) [2023-02-15 23:04:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:16,684 INFO L93 Difference]: Finished difference Result 2822 states and 3718 transitions. [2023-02-15 23:04:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-02-15 23:04:16,685 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 22 states have internal predecessors, (112), 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 417 [2023-02-15 23:04:16,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:16,690 INFO L225 Difference]: With dead ends: 2822 [2023-02-15 23:04:16,690 INFO L226 Difference]: Without dead ends: 2793 [2023-02-15 23:04:16,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1399, Invalid=5081, Unknown=0, NotChecked=0, Total=6480 [2023-02-15 23:04:16,691 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 182 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:16,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 610 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:04:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2023-02-15 23:04:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 1921. [2023-02-15 23:04:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1504 states have (on average 1.0638297872340425) internal successors, (1600), 1501 states have internal predecessors, (1600), 263 states have call successors, (263), 103 states have call predecessors, (263), 150 states have return successors, (542), 316 states have call predecessors, (542), 259 states have call successors, (542) [2023-02-15 23:04:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2405 transitions. [2023-02-15 23:04:16,803 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2405 transitions. Word has length 417 [2023-02-15 23:04:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:16,803 INFO L495 AbstractCegarLoop]: Abstraction has 1921 states and 2405 transitions. [2023-02-15 23:04:16,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.333333333333333) internal successors, (112), 22 states have internal predecessors, (112), 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) [2023-02-15 23:04:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2405 transitions. [2023-02-15 23:04:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2023-02-15 23:04:16,806 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:16,806 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 21, 21, 21, 21, 21, 21, 21, 20, 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] [2023-02-15 23:04:16,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:17,011 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,SelfDestructingSolverStorable79 [2023-02-15 23:04:17,011 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-02-15 23:04:17,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:17,012 INFO L85 PathProgramCache]: Analyzing trace with hash -272107517, now seen corresponding path program 12 times [2023-02-15 23:04:17,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:17,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703917940] [2023-02-15 23:04:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:17,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 23:04:17,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314150481] [2023-02-15 23:04:17,021 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:04:17,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:17,022 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) [2023-02-15 23:04:17,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-02-15 23:04:17,210 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-02-15 23:04:17,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-15 23:04:17,216 INFO L286 TraceCheckSpWp]: Computing forward predicates...