./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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/recursive/MultCommutative-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:33:49,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:33:49,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:33:49,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:33:49,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:33:49,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:33:49,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:33:49,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:33:49,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:33:49,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:33:49,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:33:49,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:33:49,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:33:49,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:33:49,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:33:49,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:33:49,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:33:49,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:33:49,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:33:49,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:33:49,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:33:49,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:33:49,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:33:49,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:33:49,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:33:49,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:33:49,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:33:49,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:33:49,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:33:49,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:33:49,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:33:49,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:33:49,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:33:49,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:33:49,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:33:49,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:33:49,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:33:49,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:33:49,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:33:49,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:33:49,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:33:49,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-02-14 02:33:49,369 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:33:49,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:33:49,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:33:49,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:33:49,375 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:33:49,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:33:49,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:33:49,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:33:49,377 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:33:49,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:33:49,378 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:33:49,378 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:33:49,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:33:49,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-14 02:33:49,379 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:33:49,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 02:33:49,380 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:33:49,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 02:33:49,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:33:49,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:33:49,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:33:49,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:33:49,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:33:49,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:33:49,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 02:33:49,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 02:33:49,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 02:33:49,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:33:49,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 02:33:49,382 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:33:49,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:33:49,383 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:33:49,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-14 02:33:49,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:33:49,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:33:49,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:33:49,632 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:33:49,632 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:33:49,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-14 02:33:50,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:33:50,966 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:33:50,966 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-14 02:33:50,970 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370bd48f8/368a02bc7dcf4f7fbcd99cece17b9924/FLAG004134712 [2023-02-14 02:33:50,982 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370bd48f8/368a02bc7dcf4f7fbcd99cece17b9924 [2023-02-14 02:33:50,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:33:50,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:33:50,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:33:50,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:33:50,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:33:50,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:33:50" (1/1) ... [2023-02-14 02:33:50,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb8a297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:50, skipping insertion in model container [2023-02-14 02:33:50,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:33:50" (1/1) ... [2023-02-14 02:33:50,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:33:51,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:33:51,122 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-14 02:33:51,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:33:51,131 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 02:33:51,142 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c[970,983] [2023-02-14 02:33:51,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:33:51,153 INFO L208 MainTranslator]: Completed translation [2023-02-14 02:33:51,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51 WrapperNode [2023-02-14 02:33:51,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:33:51,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 02:33:51,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 02:33:51,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 02:33:51,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,180 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-14 02:33:51,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 02:33:51,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 02:33:51,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 02:33:51,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 02:33:51,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 02:33:51,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 02:33:51,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 02:33:51,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 02:33:51,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (1/1) ... [2023-02-14 02:33:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:33:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:51,251 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) [2023-02-14 02:33:51,272 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 [2023-02-14 02:33:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 02:33:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-14 02:33:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-14 02:33:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 02:33:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 02:33:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 02:33:51,347 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 02:33:51,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 02:33:51,542 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 02:33:51,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 02:33:51,563 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-14 02:33:51,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:33:51 BoogieIcfgContainer [2023-02-14 02:33:51,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 02:33:51,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 02:33:51,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 02:33:51,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 02:33:51,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:33:50" (1/3) ... [2023-02-14 02:33:51,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceb4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:33:51, skipping insertion in model container [2023-02-14 02:33:51,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:33:51" (2/3) ... [2023-02-14 02:33:51,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bceb4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:33:51, skipping insertion in model container [2023-02-14 02:33:51,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:33:51" (3/3) ... [2023-02-14 02:33:51,590 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-14 02:33:51,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 02:33:51,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-14 02:33:51,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 02:33:51,673 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;@1d94cb1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 02:33:51,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-14 02:33:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 02:33:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 02:33:51,681 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:51,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:51,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 617794544, now seen corresponding path program 1 times [2023-02-14 02:33:51,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:51,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191512089] [2023-02-14 02:33:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:51,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:51,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191512089] [2023-02-14 02:33:51,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191512089] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:51,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:51,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:33:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152684840] [2023-02-14 02:33:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:33:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:51,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:33:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:33:51,921 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.5) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:51,995 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2023-02-14 02:33:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:33:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 02:33:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,005 INFO L225 Difference]: With dead ends: 39 [2023-02-14 02:33:52,005 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 02:33:52,008 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 [2023-02-14 02:33:52,013 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 64 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 02:33:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-02-14 02:33:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 4 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) [2023-02-14 02:33:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-14 02:33:52,053 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2023-02-14 02:33:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,054 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-14 02:33:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-14 02:33:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 02:33:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 02:33:52,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1971761717, now seen corresponding path program 1 times [2023-02-14 02:33:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886323143] [2023-02-14 02:33:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:52,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886323143] [2023-02-14 02:33:52,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886323143] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:52,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:33:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863879617] [2023-02-14 02:33:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:52,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:52,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:52,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:52,158 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:52,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:52,268 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2023-02-14 02:33:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:33:52,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 02:33:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,270 INFO L225 Difference]: With dead ends: 64 [2023-02-14 02:33:52,270 INFO L226 Difference]: Without dead ends: 42 [2023-02-14 02:33:52,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 02:33:52,272 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 57 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-14 02:33:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2023-02-14 02:33:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 30 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-14 02:33:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-14 02:33:52,280 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 9 [2023-02-14 02:33:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-14 02:33:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-14 02:33:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 02:33:52,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 02:33:52,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash 995288596, now seen corresponding path program 1 times [2023-02-14 02:33:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887892499] [2023-02-14 02:33:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:52,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:52,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887892499] [2023-02-14 02:33:52,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887892499] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:52,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:52,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:33:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048689812] [2023-02-14 02:33:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:52,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:52,357 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:52,422 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-02-14 02:33:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:33:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 02:33:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,425 INFO L225 Difference]: With dead ends: 58 [2023-02-14 02:33:52,425 INFO L226 Difference]: Without dead ends: 57 [2023-02-14 02:33:52,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 02:33:52,427 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-14 02:33:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2023-02-14 02:33:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.368421052631579) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 02:33:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-02-14 02:33:52,447 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 10 [2023-02-14 02:33:52,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,448 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-02-14 02:33:52,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-02-14 02:33:52,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 02:33:52,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,450 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 02:33:52,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1452689498, now seen corresponding path program 1 times [2023-02-14 02:33:52,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125614721] [2023-02-14 02:33:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:52,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:52,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125614721] [2023-02-14 02:33:52,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125614721] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:52,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:52,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:33:52,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387833269] [2023-02-14 02:33:52,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:52,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:52,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:52,531 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-14 02:33:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:52,599 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-02-14 02:33:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:33:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 15 [2023-02-14 02:33:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,601 INFO L225 Difference]: With dead ends: 77 [2023-02-14 02:33:52,601 INFO L226 Difference]: Without dead ends: 76 [2023-02-14 02:33:52,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-14 02:33:52,603 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-14 02:33:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2023-02-14 02:33:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.36) internal successors, (68), 54 states have internal predecessors, (68), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-14 02:33:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-02-14 02:33:52,615 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 15 [2023-02-14 02:33:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,615 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-02-14 02:33:52,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-14 02:33:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-02-14 02:33:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 02:33:52,616 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,617 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 02:33:52,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1005455158, now seen corresponding path program 1 times [2023-02-14 02:33:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750624139] [2023-02-14 02:33:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:52,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:52,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750624139] [2023-02-14 02:33:52,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750624139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:52,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:52,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:33:52,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218469936] [2023-02-14 02:33:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:52,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:52,686 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 02:33:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:52,742 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2023-02-14 02:33:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:33:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-14 02:33:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,745 INFO L225 Difference]: With dead ends: 121 [2023-02-14 02:33:52,745 INFO L226 Difference]: Without dead ends: 85 [2023-02-14 02:33:52,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 02:33:52,747 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 77 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:52,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-14 02:33:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2023-02-14 02:33:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 61 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 02:33:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2023-02-14 02:33:52,759 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 16 [2023-02-14 02:33:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,760 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2023-02-14 02:33:52,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 02:33:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2023-02-14 02:33:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 02:33:52,761 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 02:33:52,761 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1104121313, now seen corresponding path program 1 times [2023-02-14 02:33:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555938760] [2023-02-14 02:33:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:52,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555938760] [2023-02-14 02:33:52,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555938760] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:52,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:52,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:33:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397094504] [2023-02-14 02:33:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:52,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:52,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:52,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:52,822 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 02:33:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:52,905 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-02-14 02:33:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:33:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-14 02:33:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:52,907 INFO L225 Difference]: With dead ends: 102 [2023-02-14 02:33:52,909 INFO L226 Difference]: Without dead ends: 101 [2023-02-14 02:33:52,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 02:33:52,915 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:52,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 90 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-14 02:33:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-02-14 02:33:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 73 states have internal predecessors, (93), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-14 02:33:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2023-02-14 02:33:52,940 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 17 [2023-02-14 02:33:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:52,940 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2023-02-14 02:33:52,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 02:33:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2023-02-14 02:33:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 02:33:52,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:52,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:52,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 02:33:52,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash -773947711, now seen corresponding path program 1 times [2023-02-14 02:33:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492296267] [2023-02-14 02:33:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 02:33:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:53,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492296267] [2023-02-14 02:33:53,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492296267] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:53,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013347035] [2023-02-14 02:33:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:53,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:53,105 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) [2023-02-14 02:33:53,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 02:33:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:33:53,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:53,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:53,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013347035] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:53,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:53,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-14 02:33:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127694865] [2023-02-14 02:33:53,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 02:33:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 02:33:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-14 02:33:53,302 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:33:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:53,423 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2023-02-14 02:33:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 02:33:53,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-14 02:33:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:53,426 INFO L225 Difference]: With dead ends: 152 [2023-02-14 02:33:53,427 INFO L226 Difference]: Without dead ends: 151 [2023-02-14 02:33:53,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:33:53,429 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:53,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 134 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-02-14 02:33:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 121. [2023-02-14 02:33:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 97 states have internal predecessors, (124), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-14 02:33:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-02-14 02:33:53,471 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 18 [2023-02-14 02:33:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:53,471 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-02-14 02:33:53,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-14 02:33:53,472 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-02-14 02:33:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-14 02:33:53,473 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:53,473 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:53,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 02:33:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:53,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 922018386, now seen corresponding path program 1 times [2023-02-14 02:33:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:53,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921432806] [2023-02-14 02:33:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 02:33:53,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:53,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921432806] [2023-02-14 02:33:53,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921432806] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:33:53,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:33:53,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 02:33:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258695012] [2023-02-14 02:33:53,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:33:53,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:33:53,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:33:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:33:53,752 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:53,797 INFO L93 Difference]: Finished difference Result 163 states and 206 transitions. [2023-02-14 02:33:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 02:33:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-14 02:33:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:53,799 INFO L225 Difference]: With dead ends: 163 [2023-02-14 02:33:53,799 INFO L226 Difference]: Without dead ends: 59 [2023-02-14 02:33:53,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-14 02:33:53,803 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:53,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 53 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-14 02:33:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-02-14 02:33:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.2) internal successors, (48), 41 states have internal predecessors, (48), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-14 02:33:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2023-02-14 02:33:53,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 20 [2023-02-14 02:33:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:53,815 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2023-02-14 02:33:53,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 02:33:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2023-02-14 02:33:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 02:33:53,816 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:53,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:53,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 02:33:53,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1777424789, now seen corresponding path program 1 times [2023-02-14 02:33:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:53,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828556808] [2023-02-14 02:33:53,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 02:33:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828556808] [2023-02-14 02:33:53,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828556808] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548414270] [2023-02-14 02:33:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:53,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:53,905 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) [2023-02-14 02:33:53,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 02:33:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:53,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:33:53,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:53,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 02:33:54,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548414270] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:54,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:54,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-02-14 02:33:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245348546] [2023-02-14 02:33:54,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:54,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 02:33:54,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 02:33:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:33:54,089 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:54,176 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-02-14 02:33:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 02:33:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 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 19 [2023-02-14 02:33:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:54,177 INFO L225 Difference]: With dead ends: 65 [2023-02-14 02:33:54,178 INFO L226 Difference]: Without dead ends: 64 [2023-02-14 02:33:54,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-02-14 02:33:54,180 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:54,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 102 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-14 02:33:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-02-14 02:33:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-14 02:33:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2023-02-14 02:33:54,190 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 19 [2023-02-14 02:33:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:54,191 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2023-02-14 02:33:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2023-02-14 02:33:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 02:33:54,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:54,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:54,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 02:33:54,398 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,SelfDestructingSolverStorable8 [2023-02-14 02:33:54,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:54,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:54,399 INFO L85 PathProgramCache]: Analyzing trace with hash -211759156, now seen corresponding path program 1 times [2023-02-14 02:33:54,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837565802] [2023-02-14 02:33:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:54,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 02:33:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 02:33:54,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837565802] [2023-02-14 02:33:54,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837565802] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:54,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877008238] [2023-02-14 02:33:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:54,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:54,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:54,475 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) [2023-02-14 02:33:54,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 02:33:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:33:54,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 02:33:54,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 02:33:54,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877008238] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:54,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:54,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2023-02-14 02:33:54,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357349659] [2023-02-14 02:33:54,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:54,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 02:33:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 02:33:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-14 02:33:54,593 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:54,671 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-02-14 02:33:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 02:33:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-14 02:33:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:54,673 INFO L225 Difference]: With dead ends: 71 [2023-02-14 02:33:54,673 INFO L226 Difference]: Without dead ends: 70 [2023-02-14 02:33:54,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:33:54,674 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:54,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 128 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 02:33:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-14 02:33:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2023-02-14 02:33:54,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.127659574468085) internal successors, (53), 46 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-14 02:33:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2023-02-14 02:33:54,679 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 25 [2023-02-14 02:33:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:54,679 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2023-02-14 02:33:54,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2023-02-14 02:33:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 02:33:54,681 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:54,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:54,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 02:33:54,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:54,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:54,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2025400810, now seen corresponding path program 1 times [2023-02-14 02:33:54,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13056216] [2023-02-14 02:33:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:54,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 02:33:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13056216] [2023-02-14 02:33:55,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13056216] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194907745] [2023-02-14 02:33:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:55,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:55,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:55,022 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) [2023-02-14 02:33:55,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 02:33:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 02:33:55,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:55,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:55,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:55,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194907745] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:55,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:55,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-14 02:33:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025534230] [2023-02-14 02:33:55,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 02:33:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:55,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 02:33:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:33:55,198 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:55,360 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2023-02-14 02:33:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 02:33:55,360 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-02-14 02:33:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:55,361 INFO L225 Difference]: With dead ends: 93 [2023-02-14 02:33:55,361 INFO L226 Difference]: Without dead ends: 60 [2023-02-14 02:33:55,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-02-14 02:33:55,362 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:55,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 97 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-14 02:33:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-02-14 02:33:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-14 02:33:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-14 02:33:55,365 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 26 [2023-02-14 02:33:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:55,366 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-14 02:33:55,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 02:33:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-14 02:33:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 02:33:55,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:55,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:55,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 02:33:55,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:55,567 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1713074993, now seen corresponding path program 1 times [2023-02-14 02:33:55,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:55,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284265198] [2023-02-14 02:33:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:55,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 02:33:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:55,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:55,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284265198] [2023-02-14 02:33:55,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284265198] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183657794] [2023-02-14 02:33:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:55,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:55,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:55,704 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) [2023-02-14 02:33:55,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 02:33:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:55,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:33:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:55,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-14 02:33:56,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183657794] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:56,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:56,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-14 02:33:56,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047431034] [2023-02-14 02:33:56,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:56,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 02:33:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 02:33:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-14 02:33:56,090 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:33:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:56,338 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2023-02-14 02:33:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 02:33:56,339 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-02-14 02:33:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:56,339 INFO L225 Difference]: With dead ends: 91 [2023-02-14 02:33:56,339 INFO L226 Difference]: Without dead ends: 90 [2023-02-14 02:33:56,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-02-14 02:33:56,340 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:56,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 125 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-14 02:33:56,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2023-02-14 02:33:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-14 02:33:56,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2023-02-14 02:33:56,345 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 30 [2023-02-14 02:33:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:56,346 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2023-02-14 02:33:56,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-14 02:33:56,346 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2023-02-14 02:33:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 02:33:56,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:56,347 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:56,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 02:33:56,552 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,SelfDestructingSolverStorable11 [2023-02-14 02:33:56,553 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1774219858, now seen corresponding path program 1 times [2023-02-14 02:33:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:56,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147147072] [2023-02-14 02:33:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 02:33:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 02:33:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147147072] [2023-02-14 02:33:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147147072] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238522285] [2023-02-14 02:33:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:56,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:56,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:56,677 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) [2023-02-14 02:33:56,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 02:33:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:56,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:33:56,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 02:33:56,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 02:33:57,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238522285] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:57,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:57,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2023-02-14 02:33:57,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071874676] [2023-02-14 02:33:57,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 02:33:57,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:57,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 02:33:57,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-14 02:33:57,034 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-14 02:33:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:57,350 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2023-02-14 02:33:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-14 02:33:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2023-02-14 02:33:57,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:57,352 INFO L225 Difference]: With dead ends: 136 [2023-02-14 02:33:57,352 INFO L226 Difference]: Without dead ends: 129 [2023-02-14 02:33:57,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2023-02-14 02:33:57,353 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 145 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:57,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 92 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:33:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-14 02:33:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 73. [2023-02-14 02:33:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (12), 10 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-14 02:33:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-14 02:33:57,359 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 37 [2023-02-14 02:33:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-14 02:33:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-14 02:33:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-14 02:33:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-14 02:33:57,361 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:57,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:57,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 02:33:57,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:57,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:57,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash -181019443, now seen corresponding path program 2 times [2023-02-14 02:33:57,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:57,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732023083] [2023-02-14 02:33:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 02:33:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:57,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-14 02:33:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:57,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732023083] [2023-02-14 02:33:57,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732023083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887064744] [2023-02-14 02:33:57,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:33:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:57,877 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) [2023-02-14 02:33:57,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 02:33:57,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:33:57,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:33:57,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 02:33:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-14 02:33:58,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:33:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 57 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-14 02:33:58,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887064744] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:33:58,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:33:58,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 30 [2023-02-14 02:33:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276999520] [2023-02-14 02:33:58,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:33:58,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-14 02:33:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:33:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-14 02:33:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-02-14 02:33:58,778 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-14 02:33:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:33:59,363 INFO L93 Difference]: Finished difference Result 145 states and 167 transitions. [2023-02-14 02:33:59,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-14 02:33:59,363 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) Word has length 52 [2023-02-14 02:33:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:33:59,365 INFO L225 Difference]: With dead ends: 145 [2023-02-14 02:33:59,365 INFO L226 Difference]: Without dead ends: 144 [2023-02-14 02:33:59,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=2195, Unknown=0, NotChecked=0, Total=2652 [2023-02-14 02:33:59,366 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 191 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:33:59,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 157 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 02:33:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-02-14 02:33:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 93. [2023-02-14 02:33:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 11 states have return successors, (20), 14 states have call predecessors, (20), 5 states have call successors, (20) [2023-02-14 02:33:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-14 02:33:59,371 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 52 [2023-02-14 02:33:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:33:59,371 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-14 02:33:59,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7333333333333334) internal successors, (82), 29 states have internal predecessors, (82), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (12), 12 states have call predecessors, (12), 6 states have call successors, (12) [2023-02-14 02:33:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-14 02:33:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-14 02:33:59,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:33:59,372 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:33:59,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-14 02:33:59,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:59,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:33:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:33:59,574 INFO L85 PathProgramCache]: Analyzing trace with hash 650575638, now seen corresponding path program 2 times [2023-02-14 02:33:59,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:33:59,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817602396] [2023-02-14 02:33:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:33:59,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:33:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:33:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 02:33:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:33:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:33:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 02:33:59,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:33:59,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817602396] [2023-02-14 02:33:59,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817602396] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:33:59,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381303107] [2023-02-14 02:33:59,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:33:59,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:33:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:33:59,686 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) [2023-02-14 02:33:59,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 02:33:59,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:33:59,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:33:59,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:33:59,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:33:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 02:33:59,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:34:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-14 02:34:00,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381303107] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:34:00,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:34:00,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-02-14 02:34:00,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049564192] [2023-02-14 02:34:00,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:34:00,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 02:34:00,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:34:00,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 02:34:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-14 02:34:00,027 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-14 02:34:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:34:00,263 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-02-14 02:34:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 02:34:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) Word has length 48 [2023-02-14 02:34:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:34:00,265 INFO L225 Difference]: With dead ends: 116 [2023-02-14 02:34:00,265 INFO L226 Difference]: Without dead ends: 109 [2023-02-14 02:34:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2023-02-14 02:34:00,266 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 89 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:34:00,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 190 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 02:34:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-14 02:34:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-14 02:34:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 13 states have return successors, (22), 16 states have call predecessors, (22), 5 states have call successors, (22) [2023-02-14 02:34:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-02-14 02:34:00,271 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 48 [2023-02-14 02:34:00,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:34:00,272 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-02-14 02:34:00,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-14 02:34:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-02-14 02:34:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-14 02:34:00,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:34:00,273 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:34:00,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 02:34:00,479 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,SelfDestructingSolverStorable14 [2023-02-14 02:34:00,480 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:34:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:34:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1989693396, now seen corresponding path program 3 times [2023-02-14 02:34:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:34:00,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580396381] [2023-02-14 02:34:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:34:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:34:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:34:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-14 02:34:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 119 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-02-14 02:34:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:34:00,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580396381] [2023-02-14 02:34:00,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580396381] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:34:00,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526772023] [2023-02-14 02:34:00,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:34:00,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:00,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:34:00,855 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) [2023-02-14 02:34:00,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 02:34:00,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-14 02:34:00,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:34:00,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 02:34:00,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:34:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 58 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-14 02:34:01,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:34:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 68 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-14 02:34:01,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526772023] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:34:01,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:34:01,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 36 [2023-02-14 02:34:01,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072236736] [2023-02-14 02:34:01,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:34:01,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-14 02:34:01,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:34:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-14 02:34:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2023-02-14 02:34:01,856 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-14 02:34:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:34:03,072 INFO L93 Difference]: Finished difference Result 222 states and 251 transitions. [2023-02-14 02:34:03,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-14 02:34:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) Word has length 70 [2023-02-14 02:34:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:34:03,074 INFO L225 Difference]: With dead ends: 222 [2023-02-14 02:34:03,074 INFO L226 Difference]: Without dead ends: 197 [2023-02-14 02:34:03,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=913, Invalid=4637, Unknown=0, NotChecked=0, Total=5550 [2023-02-14 02:34:03,077 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 306 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:34:03,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 169 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 02:34:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-14 02:34:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 123. [2023-02-14 02:34:03,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 17 states have return successors, (26), 20 states have call predecessors, (26), 5 states have call successors, (26) [2023-02-14 02:34:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2023-02-14 02:34:03,084 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 70 [2023-02-14 02:34:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:34:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2023-02-14 02:34:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 34 states have internal predecessors, (109), 12 states have call successors, (15), 4 states have call predecessors, (15), 10 states have return successors, (17), 17 states have call predecessors, (17), 11 states have call successors, (17) [2023-02-14 02:34:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2023-02-14 02:34:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-02-14 02:34:03,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:34:03,087 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:34:03,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 02:34:03,292 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,SelfDestructingSolverStorable15 [2023-02-14 02:34:03,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:34:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:34:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -916650905, now seen corresponding path program 3 times [2023-02-14 02:34:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:34:03,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781679468] [2023-02-14 02:34:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:34:03,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:34:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-14 02:34:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 02:34:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:34:04,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781679468] [2023-02-14 02:34:04,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781679468] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:34:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202476956] [2023-02-14 02:34:04,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:34:04,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:34:04,411 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) [2023-02-14 02:34:04,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 02:34:04,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 02:34:04,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:34:04,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-14 02:34:04,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:34:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 02:34:04,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:34:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 30 proven. 289 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-14 02:34:08,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202476956] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:34:08,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:34:08,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 50 [2023-02-14 02:34:08,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734027513] [2023-02-14 02:34:08,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:34:08,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-14 02:34:08,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:34:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-14 02:34:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2228, Unknown=0, NotChecked=0, Total=2550 [2023-02-14 02:34:08,540 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-14 02:34:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:34:09,915 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2023-02-14 02:34:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-14 02:34:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) Word has length 108 [2023-02-14 02:34:09,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:34:09,917 INFO L225 Difference]: With dead ends: 237 [2023-02-14 02:34:09,917 INFO L226 Difference]: Without dead ends: 236 [2023-02-14 02:34:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 197 SyntacticMatches, 9 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1122, Invalid=6888, Unknown=0, NotChecked=0, Total=8010 [2023-02-14 02:34:09,921 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 496 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 02:34:09,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 299 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-14 02:34:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-14 02:34:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 163. [2023-02-14 02:34:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.0381679389312977) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 4 states have call predecessors, (6), 25 states have return successors, (42), 28 states have call predecessors, (42), 5 states have call successors, (42) [2023-02-14 02:34:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 184 transitions. [2023-02-14 02:34:09,929 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 184 transitions. Word has length 108 [2023-02-14 02:34:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:34:09,929 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 184 transitions. [2023-02-14 02:34:09,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.52) internal successors, (126), 49 states have internal predecessors, (126), 8 states have call successors, (10), 3 states have call predecessors, (10), 15 states have return successors, (24), 24 states have call predecessors, (24), 6 states have call successors, (24) [2023-02-14 02:34:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 184 transitions. [2023-02-14 02:34:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-14 02:34:09,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:34:09,931 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 11, 11, 11, 10, 9, 9, 9, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:34:09,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-14 02:34:10,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-14 02:34:10,142 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:34:10,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:34:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1138144878, now seen corresponding path program 4 times [2023-02-14 02:34:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:34:10,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745323152] [2023-02-14 02:34:10,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:34:10,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:34:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:34:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-14 02:34:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:11,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-14 02:34:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:34:11,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745323152] [2023-02-14 02:34:11,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745323152] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:34:11,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950733334] [2023-02-14 02:34:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 02:34:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:11,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:34:11,205 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) [2023-02-14 02:34:11,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 02:34:11,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 02:34:11,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:34:11,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-14 02:34:11,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:34:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 6 proven. 421 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-02-14 02:34:11,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:34:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 36 proven. 423 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-02-14 02:34:15,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950733334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:34:15,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:34:15,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 26] total 57 [2023-02-14 02:34:15,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690543596] [2023-02-14 02:34:15,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:34:15,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-02-14 02:34:15,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:34:15,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-02-14 02:34:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2958, Unknown=0, NotChecked=0, Total=3306 [2023-02-14 02:34:15,104 INFO L87 Difference]: Start difference. First operand 163 states and 184 transitions. Second operand has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-02-14 02:34:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:34:17,549 INFO L93 Difference]: Finished difference Result 330 states and 369 transitions. [2023-02-14 02:34:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-02-14 02:34:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) Word has length 126 [2023-02-14 02:34:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:34:17,551 INFO L225 Difference]: With dead ends: 330 [2023-02-14 02:34:17,551 INFO L226 Difference]: Without dead ends: 302 [2023-02-14 02:34:17,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 234 SyntacticMatches, 9 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1872, Invalid=12890, Unknown=0, NotChecked=0, Total=14762 [2023-02-14 02:34:17,556 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 781 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:34:17,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 467 Invalid, 2090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 02:34:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-02-14 02:34:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 267. [2023-02-14 02:34:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 214 states have (on average 1.0327102803738317) internal successors, (221), 213 states have internal predecessors, (221), 9 states have call successors, (9), 6 states have call predecessors, (9), 43 states have return successors, (61), 47 states have call predecessors, (61), 7 states have call successors, (61) [2023-02-14 02:34:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 291 transitions. [2023-02-14 02:34:17,567 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 291 transitions. Word has length 126 [2023-02-14 02:34:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:34:17,568 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 291 transitions. [2023-02-14 02:34:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.719298245614035) internal successors, (155), 56 states have internal predecessors, (155), 12 states have call successors, (14), 3 states have call predecessors, (14), 18 states have return successors, (29), 28 states have call predecessors, (29), 10 states have call successors, (29) [2023-02-14 02:34:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 291 transitions. [2023-02-14 02:34:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-02-14 02:34:17,570 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:34:17,570 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:34:17,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-14 02:34:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-14 02:34:17,775 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:34:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:34:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 245585264, now seen corresponding path program 5 times [2023-02-14 02:34:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:34:17,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839823320] [2023-02-14 02:34:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:34:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:34:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:34:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-14 02:34:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:18,986 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 219 proven. 247 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-14 02:34:18,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:34:18,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839823320] [2023-02-14 02:34:18,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839823320] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:34:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332337202] [2023-02-14 02:34:18,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 02:34:18,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:18,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:34:18,988 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) [2023-02-14 02:34:19,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 02:34:19,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-02-14 02:34:19,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:34:19,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-14 02:34:19,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:34:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 478 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-02-14 02:34:19,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:34:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 3 proven. 522 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-02-14 02:34:24,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332337202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:34:24,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:34:24,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 30] total 66 [2023-02-14 02:34:24,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673377504] [2023-02-14 02:34:24,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:34:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-14 02:34:24,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:34:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-14 02:34:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=3994, Unknown=0, NotChecked=0, Total=4422 [2023-02-14 02:34:24,581 INFO L87 Difference]: Start difference. First operand 267 states and 291 transitions. Second operand has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-02-14 02:34:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:34:28,587 INFO L93 Difference]: Finished difference Result 522 states and 585 transitions. [2023-02-14 02:34:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-02-14 02:34:28,589 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) Word has length 136 [2023-02-14 02:34:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:34:28,591 INFO L225 Difference]: With dead ends: 522 [2023-02-14 02:34:28,591 INFO L226 Difference]: Without dead ends: 467 [2023-02-14 02:34:28,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 246 SyntacticMatches, 9 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7844 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3422, Invalid=23968, Unknown=0, NotChecked=0, Total=27390 [2023-02-14 02:34:28,599 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 881 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 3095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:34:28,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 466 Invalid, 3095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-14 02:34:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-14 02:34:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 213. [2023-02-14 02:34:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 171 states have (on average 1.0292397660818713) internal successors, (176), 170 states have internal predecessors, (176), 6 states have call successors, (6), 4 states have call predecessors, (6), 35 states have return successors, (52), 38 states have call predecessors, (52), 5 states have call successors, (52) [2023-02-14 02:34:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 234 transitions. [2023-02-14 02:34:28,610 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 234 transitions. Word has length 136 [2023-02-14 02:34:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:34:28,611 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 234 transitions. [2023-02-14 02:34:28,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.787878787878788) internal successors, (184), 64 states have internal predecessors, (184), 14 states have call successors, (16), 4 states have call predecessors, (16), 22 states have return successors, (35), 34 states have call predecessors, (35), 12 states have call successors, (35) [2023-02-14 02:34:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 234 transitions. [2023-02-14 02:34:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-14 02:34:28,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:34:28,613 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:34:28,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-14 02:34:28,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:28,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:34:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:34:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 116292191, now seen corresponding path program 4 times [2023-02-14 02:34:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:34:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650824295] [2023-02-14 02:34:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:34:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:34:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-14 02:34:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:34:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:34:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-14 02:34:33,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:34:33,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650824295] [2023-02-14 02:34:33,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650824295] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:34:33,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640709094] [2023-02-14 02:34:33,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 02:34:33,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:34:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:34:33,338 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) [2023-02-14 02:34:33,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-14 02:34:33,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 02:34:33,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:34:33,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-14 02:34:33,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:34:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 0 proven. 909 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2023-02-14 02:34:34,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:35:00,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 70 proven. 909 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-02-14 02:35:00,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640709094] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:35:00,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:35:00,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 38] total 90 [2023-02-14 02:35:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662664085] [2023-02-14 02:35:00,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:35:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2023-02-14 02:35:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:35:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2023-02-14 02:35:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=934, Invalid=7256, Unknown=0, NotChecked=0, Total=8190 [2023-02-14 02:35:01,002 INFO L87 Difference]: Start difference. First operand 213 states and 234 transitions. Second operand has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-14 02:35:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:35:04,805 INFO L93 Difference]: Finished difference Result 445 states and 512 transitions. [2023-02-14 02:35:04,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-14 02:35:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) Word has length 196 [2023-02-14 02:35:04,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:35:04,810 INFO L225 Difference]: With dead ends: 445 [2023-02-14 02:35:04,810 INFO L226 Difference]: Without dead ends: 444 [2023-02-14 02:35:04,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 357 SyntacticMatches, 17 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9068 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3378, Invalid=25352, Unknown=0, NotChecked=0, Total=28730 [2023-02-14 02:35:04,816 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 667 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:35:04,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 588 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-14 02:35:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-02-14 02:35:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 293. [2023-02-14 02:35:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 235 states have (on average 1.0212765957446808) internal successors, (240), 234 states have internal predecessors, (240), 6 states have call successors, (6), 4 states have call predecessors, (6), 51 states have return successors, (84), 54 states have call predecessors, (84), 5 states have call successors, (84) [2023-02-14 02:35:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2023-02-14 02:35:04,834 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 196 [2023-02-14 02:35:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:35:04,834 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2023-02-14 02:35:04,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 2.3777777777777778) internal successors, (214), 89 states have internal predecessors, (214), 8 states have call successors, (10), 3 states have call predecessors, (10), 31 states have return successors, (48), 48 states have call predecessors, (48), 6 states have call successors, (48) [2023-02-14 02:35:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2023-02-14 02:35:04,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-02-14 02:35:04,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:35:04,839 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 21, 21, 21, 21, 20, 19, 19, 19, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:35:04,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-14 02:35:05,045 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,SelfDestructingSolverStorable19 [2023-02-14 02:35:05,045 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:35:05,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:35:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1277061724, now seen corresponding path program 6 times [2023-02-14 02:35:05,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:35:05,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752281811] [2023-02-14 02:35:05,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:35:05,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:35:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-14 02:35:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-14 02:35:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:35:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:35:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 6 proven. 1386 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-02-14 02:35:10,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:35:10,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752281811] [2023-02-14 02:35:10,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752281811] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:35:10,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397188866] [2023-02-14 02:35:10,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 02:35:10,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:35:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:35:10,617 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) [2023-02-14 02:35:10,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-14 02:35:11,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2023-02-14 02:35:11,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:35:11,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-14 02:35:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:35:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1114 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-02-14 02:35:12,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:35:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 272 proven. 1194 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2023-02-14 02:35:51,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397188866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:35:51,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 02:35:51,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 41, 42] total 106 [2023-02-14 02:35:51,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710321815] [2023-02-14 02:35:51,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 02:35:51,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-14 02:35:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 02:35:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-14 02:35:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=10185, Unknown=0, NotChecked=0, Total=11342 [2023-02-14 02:35:51,824 INFO L87 Difference]: Start difference. First operand 293 states and 330 transitions. Second operand has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-02-14 02:36:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:36:02,295 INFO L93 Difference]: Finished difference Result 776 states and 885 transitions. [2023-02-14 02:36:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2023-02-14 02:36:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) Word has length 236 [2023-02-14 02:36:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:36:02,300 INFO L225 Difference]: With dead ends: 776 [2023-02-14 02:36:02,300 INFO L226 Difference]: Without dead ends: 667 [2023-02-14 02:36:02,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 436 SyntacticMatches, 18 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25264 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=8676, Invalid=72264, Unknown=0, NotChecked=0, Total=80940 [2023-02-14 02:36:02,309 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 1195 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 7259 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 7819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 7259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-14 02:36:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1269 Invalid, 7819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 7259 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-14 02:36:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-02-14 02:36:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 383. [2023-02-14 02:36:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 307 states have (on average 1.01628664495114) internal successors, (312), 306 states have internal predecessors, (312), 6 states have call successors, (6), 4 states have call predecessors, (6), 69 states have return successors, (102), 72 states have call predecessors, (102), 5 states have call successors, (102) [2023-02-14 02:36:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 420 transitions. [2023-02-14 02:36:02,323 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 420 transitions. Word has length 236 [2023-02-14 02:36:02,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:36:02,324 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 420 transitions. [2023-02-14 02:36:02,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 2.481132075471698) internal successors, (263), 104 states have internal predecessors, (263), 12 states have call successors, (18), 4 states have call predecessors, (18), 38 states have return successors, (59), 59 states have call predecessors, (59), 11 states have call successors, (59) [2023-02-14 02:36:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 420 transitions. [2023-02-14 02:36:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-14 02:36:02,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:36:02,329 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:36:02,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-14 02:36:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:36:02,537 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-14 02:36:02,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:36:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1476676785, now seen corresponding path program 5 times [2023-02-14 02:36:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 02:36:02,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457073429] [2023-02-14 02:36:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:36:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 02:36:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:03,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 02:36:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:07,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:22,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:22,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 02:36:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:36:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-14 02:36:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 02:36:24,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457073429] [2023-02-14 02:36:24,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457073429] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:36:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734634241] [2023-02-14 02:36:24,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 02:36:24,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 02:36:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:36:24,190 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) [2023-02-14 02:36:24,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-14 02:36:25,226 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2023-02-14 02:36:25,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:36:25,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 130 conjunts are in the unsatisfiable core [2023-02-14 02:36:25,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:36:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5552 backedges. 0 proven. 2731 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-14 02:36:27,249 INFO L328 TraceCheckSpWp]: Computing backward predicates...