./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:58:58,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:58:58,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:58:58,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:58:58,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:58:58,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:58:58,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:58:58,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:58:58,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:58:58,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:58:58,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:58:58,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:58:58,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:58:58,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:58:58,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:58:58,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:58:58,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:58:58,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:58:58,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:58:58,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:58:58,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:58:58,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:58:58,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:58:58,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:58:58,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:58:58,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:58:58,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:58:58,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:58:58,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:58:58,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:58:58,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:58:58,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:58:58,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:58:58,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:58:58,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:58:58,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:58:58,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:58:58,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:58:58,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:58:58,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:58:58,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:58:58,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 13:58:58,414 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:58:58,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:58:58,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:58:58,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:58:58,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:58:58,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:58:58,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:58:58,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:58:58,417 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:58:58,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:58:58,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:58:58,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:58:58,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:58:58,419 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:58:58,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:58:58,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:58:58,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:58:58,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:58:58,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:58:58,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:58:58,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:58:58,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:58:58,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:58:58,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:58:58,421 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2023-02-15 13:58:58,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:58:58,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:58:58,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:58:58,674 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:58:58,674 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:58:58,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 13:58:59,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:58:59,969 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:58:59,970 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 13:58:59,975 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a65a271/3cf1513547a24763b710fc566ee9a85c/FLAG1ddbb6247 [2023-02-15 13:58:59,985 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2a65a271/3cf1513547a24763b710fc566ee9a85c [2023-02-15 13:58:59,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:58:59,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:58:59,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:58:59,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:58:59,995 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:58:59,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:58:59" (1/1) ... [2023-02-15 13:58:59,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa37e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:58:59, skipping insertion in model container [2023-02-15 13:58:59,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:58:59" (1/1) ... [2023-02-15 13:59:00,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:59:00,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:59:00,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:59:00,160 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:59:00,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:59:00,178 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:59:00,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00 WrapperNode [2023-02-15 13:59:00,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:59:00,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:59:00,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:59:00,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:59:00,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,200 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-15 13:59:00,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:59:00,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:59:00,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:59:00,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:59:00,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:59:00,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:59:00,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:59:00,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:59:00,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (1/1) ... [2023-02-15 13:59:00,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:59:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:00,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 13:59:00,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 13:59:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:59:00,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:59:00,331 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:59:00,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:59:00,405 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:59:00,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:59:00,410 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 13:59:00,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:59:00 BoogieIcfgContainer [2023-02-15 13:59:00,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:59:00,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:59:00,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:59:00,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:59:00,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:58:59" (1/3) ... [2023-02-15 13:59:00,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@802ae27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:59:00, skipping insertion in model container [2023-02-15 13:59:00,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:59:00" (2/3) ... [2023-02-15 13:59:00,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@802ae27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:59:00, skipping insertion in model container [2023-02-15 13:59:00,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:59:00" (3/3) ... [2023-02-15 13:59:00,419 INFO L112 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 13:59:00,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:59:00,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-15 13:59:00,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:59:00,475 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;@5b92339d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:59:00,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-15 13:59:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-15 13:59:00,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:00,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-15 13:59:00,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2023-02-15 13:59:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:00,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288767706] [2023-02-15 13:59:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288767706] [2023-02-15 13:59:00,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288767706] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:00,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:00,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:59:00,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049111094] [2023-02-15 13:59:00,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:59:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:59:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:00,686 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:00,726 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2023-02-15 13:59:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:59:00,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-15 13:59:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:00,734 INFO L225 Difference]: With dead ends: 54 [2023-02-15 13:59:00,735 INFO L226 Difference]: Without dead ends: 24 [2023-02-15 13:59:00,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:00,740 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:00,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-15 13:59:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-15 13:59:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-02-15 13:59:00,785 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2023-02-15 13:59:00,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:00,786 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-02-15 13:59:00,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-02-15 13:59:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:59:00,787 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:00,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:59:00,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:59:00,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2023-02-15 13:59:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:00,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534859411] [2023-02-15 13:59:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:00,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534859411] [2023-02-15 13:59:00,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534859411] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:00,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:00,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:59:00,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544203625] [2023-02-15 13:59:00,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:00,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:59:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:59:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:00,822 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:00,841 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-02-15 13:59:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:59:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:59:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:00,843 INFO L225 Difference]: With dead ends: 23 [2023-02-15 13:59:00,843 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 13:59:00,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:00,844 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:00,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 13:59:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 13:59:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-02-15 13:59:00,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2023-02-15 13:59:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-15 13:59:00,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-02-15 13:59:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 13:59:00,850 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:00,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:59:00,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash 124122716, now seen corresponding path program 1 times [2023-02-15 13:59:00,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:00,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796819279] [2023-02-15 13:59:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:00,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:00,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796819279] [2023-02-15 13:59:00,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796819279] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:00,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:00,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:59:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651080456] [2023-02-15 13:59:00,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:59:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:59:00,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:59:00,959 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,085 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-02-15 13:59:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:59:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 13:59:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,087 INFO L225 Difference]: With dead ends: 42 [2023-02-15 13:59:01,087 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 13:59:01,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:59:01,089 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 13:59:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2023-02-15 13:59:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-15 13:59:01,095 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 8 [2023-02-15 13:59:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,096 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-15 13:59:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-15 13:59:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 13:59:01,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 13:59:01,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 124122767, now seen corresponding path program 1 times [2023-02-15 13:59:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570203021] [2023-02-15 13:59:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570203021] [2023-02-15 13:59:01,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570203021] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:01,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:01,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:59:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065667098] [2023-02-15 13:59:01,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:01,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:59:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:01,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:59:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,147 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,202 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2023-02-15 13:59:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:59:01,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 13:59:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,204 INFO L225 Difference]: With dead ends: 59 [2023-02-15 13:59:01,204 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 13:59:01,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,206 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 13:59:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2023-02-15 13:59:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.564102564102564) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-15 13:59:01,221 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 8 [2023-02-15 13:59:01,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,222 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-15 13:59:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-15 13:59:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 13:59:01,222 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 13:59:01,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash -447163028, now seen corresponding path program 1 times [2023-02-15 13:59:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932077470] [2023-02-15 13:59:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932077470] [2023-02-15 13:59:01,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932077470] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:01,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:01,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:59:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38231106] [2023-02-15 13:59:01,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:01,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:59:01,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:59:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,280 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,325 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2023-02-15 13:59:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:59:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 13:59:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,330 INFO L225 Difference]: With dead ends: 61 [2023-02-15 13:59:01,330 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 13:59:01,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,331 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 13:59:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-02-15 13:59:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.553191489361702) internal successors, (73), 53 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2023-02-15 13:59:01,340 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 9 [2023-02-15 13:59:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,340 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2023-02-15 13:59:01,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2023-02-15 13:59:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 13:59:01,341 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 13:59:01,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -447161458, now seen corresponding path program 1 times [2023-02-15 13:59:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559826120] [2023-02-15 13:59:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559826120] [2023-02-15 13:59:01,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559826120] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:01,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:01,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:59:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149881096] [2023-02-15 13:59:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:59:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:59:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,396 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,466 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2023-02-15 13:59:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:59:01,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 13:59:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,468 INFO L225 Difference]: With dead ends: 98 [2023-02-15 13:59:01,468 INFO L226 Difference]: Without dead ends: 97 [2023-02-15 13:59:01,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,469 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-15 13:59:01,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-02-15 13:59:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 85 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2023-02-15 13:59:01,501 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 9 [2023-02-15 13:59:01,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,501 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2023-02-15 13:59:01,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2023-02-15 13:59:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 13:59:01,503 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 13:59:01,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -977103247, now seen corresponding path program 1 times [2023-02-15 13:59:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592808902] [2023-02-15 13:59:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592808902] [2023-02-15 13:59:01,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592808902] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:01,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:01,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:59:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124896787] [2023-02-15 13:59:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:59:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:59:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:59:01,572 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,621 INFO L93 Difference]: Finished difference Result 86 states and 121 transitions. [2023-02-15 13:59:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:59:01,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 13:59:01,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,622 INFO L225 Difference]: With dead ends: 86 [2023-02-15 13:59:01,623 INFO L226 Difference]: Without dead ends: 85 [2023-02-15 13:59:01,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:59:01,624 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-15 13:59:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-15 13:59:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 84 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2023-02-15 13:59:01,635 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 10 [2023-02-15 13:59:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,636 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2023-02-15 13:59:01,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2023-02-15 13:59:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:59:01,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 13:59:01,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -225429520, now seen corresponding path program 1 times [2023-02-15 13:59:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748507970] [2023-02-15 13:59:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748507970] [2023-02-15 13:59:01,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748507970] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:59:01,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:59:01,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:59:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963094174] [2023-02-15 13:59:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:59:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:59:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:59:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:01,689 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:01,708 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2023-02-15 13:59:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:59:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 13:59:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:01,710 INFO L225 Difference]: With dead ends: 85 [2023-02-15 13:59:01,710 INFO L226 Difference]: Without dead ends: 84 [2023-02-15 13:59:01,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:59:01,712 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:01,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-15 13:59:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-02-15 13:59:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.379746835443038) internal successors, (109), 83 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2023-02-15 13:59:01,735 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 11 [2023-02-15 13:59:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:01,735 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2023-02-15 13:59:01,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2023-02-15 13:59:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 13:59:01,737 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:01,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:01,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 13:59:01,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash -458138511, now seen corresponding path program 1 times [2023-02-15 13:59:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:01,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536988356] [2023-02-15 13:59:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:01,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536988356] [2023-02-15 13:59:01,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536988356] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507850939] [2023-02-15 13:59:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:01,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:01,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:01,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 13:59:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:01,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:59:01,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:02,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:02,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507850939] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:02,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:02,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-02-15 13:59:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151303960] [2023-02-15 13:59:02,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 13:59:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 13:59:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:59:02,089 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:02,484 INFO L93 Difference]: Finished difference Result 214 states and 298 transitions. [2023-02-15 13:59:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 13:59:02,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-15 13:59:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:02,486 INFO L225 Difference]: With dead ends: 214 [2023-02-15 13:59:02,486 INFO L226 Difference]: Without dead ends: 211 [2023-02-15 13:59:02,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 13:59:02,490 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 183 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:02,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 30 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-02-15 13:59:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 110. [2023-02-15 13:59:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2023-02-15 13:59:02,521 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 14 [2023-02-15 13:59:02,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:02,521 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2023-02-15 13:59:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2023-02-15 13:59:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 13:59:02,523 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:02,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 13:59:02,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:02,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:02,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1317391881, now seen corresponding path program 1 times [2023-02-15 13:59:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:02,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379082760] [2023-02-15 13:59:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:02,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379082760] [2023-02-15 13:59:02,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379082760] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325063427] [2023-02-15 13:59:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:02,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:02,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:02,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:02,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 13:59:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:02,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:59:02,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:02,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:02,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325063427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:02,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:02,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-02-15 13:59:02,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811027033] [2023-02-15 13:59:02,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:02,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 13:59:02,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 13:59:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:59:02,986 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:03,184 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2023-02-15 13:59:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 13:59:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 13:59:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:03,186 INFO L225 Difference]: With dead ends: 229 [2023-02-15 13:59:03,186 INFO L226 Difference]: Without dead ends: 228 [2023-02-15 13:59:03,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-02-15 13:59:03,189 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:03,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 32 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-15 13:59:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 170. [2023-02-15 13:59:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 169 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2023-02-15 13:59:03,219 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 15 [2023-02-15 13:59:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:03,219 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2023-02-15 13:59:03,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2023-02-15 13:59:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 13:59:03,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:03,221 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:03,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:03,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 13:59:03,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash -730743378, now seen corresponding path program 1 times [2023-02-15 13:59:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289409407] [2023-02-15 13:59:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:03,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289409407] [2023-02-15 13:59:03,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289409407] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:03,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010422998] [2023-02-15 13:59:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:03,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:03,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:03,475 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) [2023-02-15 13:59:03,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 13:59:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:03,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:59:03,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:03,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:03,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010422998] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:03,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 13:59:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526426345] [2023-02-15 13:59:03,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:59:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:59:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:59:03,566 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:03,652 INFO L93 Difference]: Finished difference Result 378 states and 473 transitions. [2023-02-15 13:59:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:59:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-15 13:59:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:03,654 INFO L225 Difference]: With dead ends: 378 [2023-02-15 13:59:03,654 INFO L226 Difference]: Without dead ends: 377 [2023-02-15 13:59:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:59:03,656 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:03,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:59:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-02-15 13:59:03,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2023-02-15 13:59:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 274 states have (on average 1.2372262773722629) internal successors, (339), 276 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2023-02-15 13:59:03,676 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 339 transitions. Word has length 19 [2023-02-15 13:59:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:03,676 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 339 transitions. [2023-02-15 13:59:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 339 transitions. [2023-02-15 13:59:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:59:03,681 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:03,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 13:59:03,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:03,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:03,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2017559647, now seen corresponding path program 1 times [2023-02-15 13:59:03,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:03,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252199918] [2023-02-15 13:59:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 13:59:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:03,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252199918] [2023-02-15 13:59:03,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252199918] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:03,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39747907] [2023-02-15 13:59:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:03,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:03,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 13:59:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:04,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:59:04,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 13:59:04,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 13:59:04,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39747907] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:04,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:04,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-02-15 13:59:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259828977] [2023-02-15 13:59:04,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 13:59:04,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 13:59:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-02-15 13:59:04,227 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. Second operand has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:04,722 INFO L93 Difference]: Finished difference Result 511 states and 639 transitions. [2023-02-15 13:59:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 13:59:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-15 13:59:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:04,725 INFO L225 Difference]: With dead ends: 511 [2023-02-15 13:59:04,725 INFO L226 Difference]: Without dead ends: 509 [2023-02-15 13:59:04,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=1127, Unknown=0, NotChecked=0, Total=1640 [2023-02-15 13:59:04,726 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 73 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:04,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 7 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:59:04,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-02-15 13:59:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 311. [2023-02-15 13:59:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 308 states have (on average 1.2175324675324675) internal successors, (375), 310 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 375 transitions. [2023-02-15 13:59:04,750 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 375 transitions. Word has length 25 [2023-02-15 13:59:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:04,752 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 375 transitions. [2023-02-15 13:59:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 375 transitions. [2023-02-15 13:59:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 13:59:04,754 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:04,754 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 13:59:04,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:04,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:04,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash 678241780, now seen corresponding path program 2 times [2023-02-15 13:59:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:04,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795008305] [2023-02-15 13:59:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:04,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795008305] [2023-02-15 13:59:05,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795008305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606030112] [2023-02-15 13:59:05,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:59:05,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:05,075 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:05,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 13:59:05,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:59:05,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:05,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:59:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:05,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:05,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606030112] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:05,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-02-15 13:59:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747717034] [2023-02-15 13:59:05,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 13:59:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:05,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 13:59:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2023-02-15 13:59:05,335 INFO L87 Difference]: Start difference. First operand 311 states and 375 transitions. Second operand has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:06,365 INFO L93 Difference]: Finished difference Result 1537 states and 1825 transitions. [2023-02-15 13:59:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-15 13:59:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-15 13:59:06,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:06,370 INFO L225 Difference]: With dead ends: 1537 [2023-02-15 13:59:06,370 INFO L226 Difference]: Without dead ends: 1536 [2023-02-15 13:59:06,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1687, Invalid=4475, Unknown=0, NotChecked=0, Total=6162 [2023-02-15 13:59:06,374 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 317 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:06,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 34 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:59:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-02-15 13:59:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 715. [2023-02-15 13:59:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 712 states have (on average 1.2148876404494382) internal successors, (865), 714 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 865 transitions. [2023-02-15 13:59:06,424 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 865 transitions. Word has length 30 [2023-02-15 13:59:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:06,424 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 865 transitions. [2023-02-15 13:59:06,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:06,425 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 865 transitions. [2023-02-15 13:59:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 13:59:06,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:06,426 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-15 13:59:06,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:06,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 13:59:06,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:06,638 INFO L85 PathProgramCache]: Analyzing trace with hash 499781144, now seen corresponding path program 2 times [2023-02-15 13:59:06,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:06,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379709573] [2023-02-15 13:59:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:06,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:06,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379709573] [2023-02-15 13:59:06,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379709573] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:06,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185854367] [2023-02-15 13:59:06,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:59:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:06,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:06,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:06,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 13:59:06,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:59:06,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:06,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 13:59:06,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:06,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:07,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185854367] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:07,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:07,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-15 13:59:07,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235339662] [2023-02-15 13:59:07,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:07,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 13:59:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:07,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 13:59:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2023-02-15 13:59:07,155 INFO L87 Difference]: Start difference. First operand 715 states and 865 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:08,419 INFO L93 Difference]: Finished difference Result 1329 states and 1575 transitions. [2023-02-15 13:59:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 13:59:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-15 13:59:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:08,424 INFO L225 Difference]: With dead ends: 1329 [2023-02-15 13:59:08,424 INFO L226 Difference]: Without dead ends: 1328 [2023-02-15 13:59:08,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1319, Invalid=2841, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 13:59:08,427 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 522 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:08,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 106 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 13:59:08,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-02-15 13:59:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 886. [2023-02-15 13:59:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 883 states have (on average 1.2095130237825595) internal successors, (1068), 885 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1068 transitions. [2023-02-15 13:59:08,492 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1068 transitions. Word has length 33 [2023-02-15 13:59:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:08,492 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1068 transitions. [2023-02-15 13:59:08,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1068 transitions. [2023-02-15 13:59:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 13:59:08,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:08,493 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-02-15 13:59:08,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:08,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:08,701 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash -746656358, now seen corresponding path program 1 times [2023-02-15 13:59:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:08,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139653560] [2023-02-15 13:59:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 13:59:08,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:08,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139653560] [2023-02-15 13:59:08,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139653560] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:08,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741023541] [2023-02-15 13:59:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:08,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:08,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:08,741 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:08,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 13:59:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:08,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:59:08,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:08,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:08,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741023541] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:08,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:08,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 15 [2023-02-15 13:59:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344717791] [2023-02-15 13:59:08,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:59:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:59:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:59:08,956 INFO L87 Difference]: Start difference. First operand 886 states and 1068 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:09,466 INFO L93 Difference]: Finished difference Result 3180 states and 3901 transitions. [2023-02-15 13:59:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 13:59:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-15 13:59:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:09,475 INFO L225 Difference]: With dead ends: 3180 [2023-02-15 13:59:09,475 INFO L226 Difference]: Without dead ends: 2976 [2023-02-15 13:59:09,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=545, Invalid=1015, Unknown=0, NotChecked=0, Total=1560 [2023-02-15 13:59:09,479 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 245 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:09,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 27 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:09,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2023-02-15 13:59:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 445. [2023-02-15 13:59:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 443 states have (on average 1.18510158013544) internal successors, (525), 444 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 525 transitions. [2023-02-15 13:59:09,536 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 525 transitions. Word has length 35 [2023-02-15 13:59:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 525 transitions. [2023-02-15 13:59:09,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 525 transitions. [2023-02-15 13:59:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 13:59:09,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:09,545 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:09,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:09,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:09,751 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1457588718, now seen corresponding path program 2 times [2023-02-15 13:59:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:09,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75138908] [2023-02-15 13:59:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75138908] [2023-02-15 13:59:09,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75138908] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340333420] [2023-02-15 13:59:09,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:59:09,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:09,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:09,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 13:59:09,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:59:09,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:09,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:59:09,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:09,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:10,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340333420] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:10,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:10,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-15 13:59:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506958072] [2023-02-15 13:59:10,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:59:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:59:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:59:10,086 INFO L87 Difference]: Start difference. First operand 445 states and 525 transitions. Second operand has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:10,330 INFO L93 Difference]: Finished difference Result 1706 states and 2070 transitions. [2023-02-15 13:59:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 13:59:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-15 13:59:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:10,336 INFO L225 Difference]: With dead ends: 1706 [2023-02-15 13:59:10,336 INFO L226 Difference]: Without dead ends: 1705 [2023-02-15 13:59:10,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:59:10,337 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 149 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:10,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 83 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:59:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-02-15 13:59:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1203. [2023-02-15 13:59:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1201 states have (on average 1.1740216486261448) internal successors, (1410), 1202 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1410 transitions. [2023-02-15 13:59:10,477 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1410 transitions. Word has length 39 [2023-02-15 13:59:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:10,478 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1410 transitions. [2023-02-15 13:59:10,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1410 transitions. [2023-02-15 13:59:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 13:59:10,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:10,479 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-02-15 13:59:10,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 13:59:10,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 13:59:10,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1726793311, now seen corresponding path program 3 times [2023-02-15 13:59:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:10,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976778448] [2023-02-15 13:59:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:10,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976778448] [2023-02-15 13:59:10,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976778448] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110318176] [2023-02-15 13:59:10,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:59:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:10,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:10,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 13:59:10,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-15 13:59:10,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:10,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:59:10,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:11,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:11,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110318176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:11,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:11,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 36 [2023-02-15 13:59:11,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473812596] [2023-02-15 13:59:11,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-15 13:59:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-15 13:59:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 13:59:11,276 INFO L87 Difference]: Start difference. First operand 1203 states and 1410 transitions. Second operand has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:16,312 INFO L93 Difference]: Finished difference Result 10558 states and 12329 transitions. [2023-02-15 13:59:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-02-15 13:59:16,313 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-15 13:59:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:16,340 INFO L225 Difference]: With dead ends: 10558 [2023-02-15 13:59:16,340 INFO L226 Difference]: Without dead ends: 10557 [2023-02-15 13:59:16,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26171 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=12057, Invalid=43403, Unknown=0, NotChecked=0, Total=55460 [2023-02-15 13:59:16,352 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 868 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:16,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 43 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 13:59:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2023-02-15 13:59:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 3947. [2023-02-15 13:59:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3945 states have (on average 1.1842839036755386) internal successors, (4672), 3946 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4672 transitions. [2023-02-15 13:59:17,003 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4672 transitions. Word has length 46 [2023-02-15 13:59:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:17,003 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4672 transitions. [2023-02-15 13:59:17,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4672 transitions. [2023-02-15 13:59:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 13:59:17,005 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:17,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-02-15 13:59:17,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:17,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 13:59:17,211 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2065951787, now seen corresponding path program 4 times [2023-02-15 13:59:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096558577] [2023-02-15 13:59:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:17,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096558577] [2023-02-15 13:59:17,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096558577] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:17,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579944244] [2023-02-15 13:59:17,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 13:59:17,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:17,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:17,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:17,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 13:59:17,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 13:59:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:17,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 13:59:17,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:17,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:18,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579944244] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:18,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:18,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 52 [2023-02-15 13:59:18,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938170136] [2023-02-15 13:59:18,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:18,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-15 13:59:18,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:18,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-15 13:59:18,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=2207, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 13:59:18,286 INFO L87 Difference]: Start difference. First operand 3947 states and 4672 transitions. Second operand has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:33,907 INFO L93 Difference]: Finished difference Result 6896 states and 8060 transitions. [2023-02-15 13:59:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 410 states. [2023-02-15 13:59:33,909 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-15 13:59:33,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:33,923 INFO L225 Difference]: With dead ends: 6896 [2023-02-15 13:59:33,923 INFO L226 Difference]: Without dead ends: 6895 [2023-02-15 13:59:33,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 443 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101119 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=44916, Invalid=152664, Unknown=0, NotChecked=0, Total=197580 [2023-02-15 13:59:33,934 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2150 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2150 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:33,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2150 Valid, 224 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 13:59:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2023-02-15 13:59:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 4643. [2023-02-15 13:59:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 4641 states have (on average 1.1831501831501832) internal successors, (5491), 4642 states have internal predecessors, (5491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 5491 transitions. [2023-02-15 13:59:34,737 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 5491 transitions. Word has length 60 [2023-02-15 13:59:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:34,737 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 5491 transitions. [2023-02-15 13:59:34,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 53 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 5491 transitions. [2023-02-15 13:59:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-15 13:59:34,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:34,740 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2023-02-15 13:59:34,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:34,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 13:59:34,946 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1453726494, now seen corresponding path program 5 times [2023-02-15 13:59:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682179025] [2023-02-15 13:59:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:35,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682179025] [2023-02-15 13:59:35,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682179025] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:35,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512425539] [2023-02-15 13:59:35,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 13:59:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:35,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:35,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 13:59:35,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-15 13:59:35,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:35,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 13:59:35,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-15 13:59:35,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-15 13:59:35,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512425539] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:35,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:35,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 38 [2023-02-15 13:59:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948723460] [2023-02-15 13:59:35,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:35,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 13:59:35,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 13:59:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 13:59:35,617 INFO L87 Difference]: Start difference. First operand 4643 states and 5491 transitions. Second operand has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:41,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:41,619 INFO L93 Difference]: Finished difference Result 12361 states and 14600 transitions. [2023-02-15 13:59:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2023-02-15 13:59:41,620 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-15 13:59:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:41,621 INFO L225 Difference]: With dead ends: 12361 [2023-02-15 13:59:41,621 INFO L226 Difference]: Without dead ends: 521 [2023-02-15 13:59:41,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22419 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=8533, Invalid=46927, Unknown=0, NotChecked=0, Total=55460 [2023-02-15 13:59:41,634 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 675 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:41,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 22 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 13:59:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-02-15 13:59:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 193. [2023-02-15 13:59:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.0994764397905759) internal successors, (210), 192 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2023-02-15 13:59:41,710 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 62 [2023-02-15 13:59:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:41,711 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2023-02-15 13:59:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2023-02-15 13:59:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-15 13:59:41,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:41,712 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2023-02-15 13:59:41,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:41,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:41,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 727673482, now seen corresponding path program 6 times [2023-02-15 13:59:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525046177] [2023-02-15 13:59:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:41,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525046177] [2023-02-15 13:59:42,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525046177] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173015234] [2023-02-15 13:59:42,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 13:59:42,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:42,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:42,185 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:42,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 13:59:42,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-02-15 13:59:42,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:42,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 13:59:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:42,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:42,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173015234] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:42,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:42,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 50 [2023-02-15 13:59:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16766688] [2023-02-15 13:59:42,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:42,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 13:59:42,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 13:59:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1997, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 13:59:42,897 INFO L87 Difference]: Start difference. First operand 193 states and 210 transitions. Second operand has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:45,212 INFO L93 Difference]: Finished difference Result 436 states and 458 transitions. [2023-02-15 13:59:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-15 13:59:45,213 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-15 13:59:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:45,214 INFO L225 Difference]: With dead ends: 436 [2023-02-15 13:59:45,214 INFO L226 Difference]: Without dead ends: 435 [2023-02-15 13:59:45,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7684 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5282, Invalid=14458, Unknown=0, NotChecked=0, Total=19740 [2023-02-15 13:59:45,217 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 974 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:45,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 64 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 13:59:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-02-15 13:59:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 183. [2023-02-15 13:59:45,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 181 states have (on average 1.1160220994475138) internal successors, (202), 182 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2023-02-15 13:59:45,297 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 62 [2023-02-15 13:59:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:45,298 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2023-02-15 13:59:45,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:45,298 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2023-02-15 13:59:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-15 13:59:45,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:45,299 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-15 13:59:45,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:45,504 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:45,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash -362593675, now seen corresponding path program 7 times [2023-02-15 13:59:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:45,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825948751] [2023-02-15 13:59:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:45,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:45,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825948751] [2023-02-15 13:59:45,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825948751] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:45,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388767853] [2023-02-15 13:59:45,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 13:59:45,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:45,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:45,891 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:45,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 13:59:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:45,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 13:59:45,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:46,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:46,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388767853] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:46,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:46,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 19, 19] total 64 [2023-02-15 13:59:46,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070083855] [2023-02-15 13:59:46,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-15 13:59:46,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-15 13:59:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=3289, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 13:59:46,819 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 65 states, 64 states have (on average 3.59375) internal successors, (230), 65 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:51,339 INFO L93 Difference]: Finished difference Result 616 states and 647 transitions. [2023-02-15 13:59:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-02-15 13:59:51,340 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 3.59375) internal successors, (230), 65 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-02-15 13:59:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:51,342 INFO L225 Difference]: With dead ends: 616 [2023-02-15 13:59:51,342 INFO L226 Difference]: Without dead ends: 615 [2023-02-15 13:59:51,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16721 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=10716, Invalid=30290, Unknown=0, NotChecked=0, Total=41006 [2023-02-15 13:59:51,345 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1192 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:51,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 82 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 13:59:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-02-15 13:59:51,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 209. [2023-02-15 13:59:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.144927536231884) internal successors, (237), 208 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 237 transitions. [2023-02-15 13:59:51,434 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 237 transitions. Word has length 78 [2023-02-15 13:59:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:51,435 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 237 transitions. [2023-02-15 13:59:51,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 3.59375) internal successors, (230), 65 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 237 transitions. [2023-02-15 13:59:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-15 13:59:51,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:51,436 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:59:51,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-15 13:59:51,638 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:51,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:51,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1221737874, now seen corresponding path program 3 times [2023-02-15 13:59:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:51,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659474021] [2023-02-15 13:59:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:51,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659474021] [2023-02-15 13:59:51,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659474021] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551123207] [2023-02-15 13:59:51,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:59:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:51,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:51,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:51,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 13:59:51,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-15 13:59:51,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:51,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 13:59:51,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:51,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:52,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551123207] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:52,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:52,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-02-15 13:59:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863069313] [2023-02-15 13:59:52,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 13:59:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 13:59:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-15 13:59:52,328 INFO L87 Difference]: Start difference. First operand 209 states and 237 transitions. Second operand has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:59:53,100 INFO L93 Difference]: Finished difference Result 935 states and 983 transitions. [2023-02-15 13:59:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-15 13:59:53,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-02-15 13:59:53,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:59:53,106 INFO L225 Difference]: With dead ends: 935 [2023-02-15 13:59:53,106 INFO L226 Difference]: Without dead ends: 934 [2023-02-15 13:59:53,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-15 13:59:53,107 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 530 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:59:53,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 161 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:59:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-02-15 13:59:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 261. [2023-02-15 13:59:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 259 states have (on average 1.135135135135135) internal successors, (294), 260 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 294 transitions. [2023-02-15 13:59:53,189 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 294 transitions. Word has length 79 [2023-02-15 13:59:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:59:53,190 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 294 transitions. [2023-02-15 13:59:53,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:59:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 294 transitions. [2023-02-15 13:59:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-02-15 13:59:53,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:59:53,190 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2023-02-15 13:59:53,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 13:59:53,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:53,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 13:59:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:59:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 698004038, now seen corresponding path program 3 times [2023-02-15 13:59:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:59:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291069338] [2023-02-15 13:59:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:59:53,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:59:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:59:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:53,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:59:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291069338] [2023-02-15 13:59:53,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291069338] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:59:53,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495216106] [2023-02-15 13:59:53,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:59:53,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:59:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:59:53,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:59:53,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 13:59:53,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-15 13:59:53,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:59:53,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 13:59:53,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:59:55,009 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:55,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:59:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:59:55,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495216106] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:59:55,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:59:55,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 91 [2023-02-15 13:59:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910730142] [2023-02-15 13:59:55,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:59:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-02-15 13:59:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:59:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-02-15 13:59:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1637, Invalid=6735, Unknown=0, NotChecked=0, Total=8372 [2023-02-15 13:59:55,966 INFO L87 Difference]: Start difference. First operand 261 states and 294 transitions. Second operand has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:00:02,045 INFO L93 Difference]: Finished difference Result 652 states and 700 transitions. [2023-02-15 14:00:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-15 14:00:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-02-15 14:00:02,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:00:02,047 INFO L225 Difference]: With dead ends: 652 [2023-02-15 14:00:02,047 INFO L226 Difference]: Without dead ends: 651 [2023-02-15 14:00:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10731 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=8689, Invalid=21761, Unknown=0, NotChecked=0, Total=30450 [2023-02-15 14:00:02,049 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 657 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 3691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 14:00:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 216 Invalid, 3691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 14:00:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-02-15 14:00:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 357. [2023-02-15 14:00:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 355 states have (on average 1.0985915492957747) internal successors, (390), 356 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 390 transitions. [2023-02-15 14:00:02,231 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 390 transitions. Word has length 93 [2023-02-15 14:00:02,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:00:02,231 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 390 transitions. [2023-02-15 14:00:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 390 transitions. [2023-02-15 14:00:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-15 14:00:02,232 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:00:02,232 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-02-15 14:00:02,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 14:00:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:00:02,433 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 14:00:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:00:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash 873996727, now seen corresponding path program 8 times [2023-02-15 14:00:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:00:02,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778907794] [2023-02-15 14:00:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:00:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:00:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:00:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:02,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:00:02,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778907794] [2023-02-15 14:00:02,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778907794] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:00:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980842356] [2023-02-15 14:00:02,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 14:00:02,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:00:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:00:02,916 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:00:02,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 14:00:02,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 14:00:02,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:00:02,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 14:00:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:00:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:03,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:00:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:04,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980842356] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:00:04,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:00:04,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-02-15 14:00:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670851793] [2023-02-15 14:00:04,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:00:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-02-15 14:00:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:00:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-02-15 14:00:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=7651, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 14:00:04,895 INFO L87 Difference]: Start difference. First operand 357 states and 390 transitions. Second operand has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:00:26,739 INFO L93 Difference]: Finished difference Result 1383 states and 1444 transitions. [2023-02-15 14:00:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2023-02-15 14:00:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-02-15 14:00:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:00:26,741 INFO L225 Difference]: With dead ends: 1383 [2023-02-15 14:00:26,741 INFO L226 Difference]: Without dead ends: 1382 [2023-02-15 14:00:26,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74825 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=38066, Invalid=142134, Unknown=0, NotChecked=0, Total=180200 [2023-02-15 14:00:26,750 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2810 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 8403 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 9096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 8403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-15 14:00:26,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 58 Invalid, 9096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 8403 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-02-15 14:00:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-02-15 14:00:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 401. [2023-02-15 14:00:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 399 states have (on average 1.087719298245614) internal successors, (434), 400 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 434 transitions. [2023-02-15 14:00:27,057 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 434 transitions. Word has length 94 [2023-02-15 14:00:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:00:27,058 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 434 transitions. [2023-02-15 14:00:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 434 transitions. [2023-02-15 14:00:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-15 14:00:27,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:00:27,058 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1] [2023-02-15 14:00:27,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 14:00:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-15 14:00:27,259 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 14:00:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:00:27,260 INFO L85 PathProgramCache]: Analyzing trace with hash -718111200, now seen corresponding path program 9 times [2023-02-15 14:00:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:00:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670974338] [2023-02-15 14:00:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:00:27,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:00:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:00:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:00:27,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670974338] [2023-02-15 14:00:27,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670974338] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:00:27,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532421517] [2023-02-15 14:00:27,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 14:00:27,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:00:27,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:00:27,735 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:00:27,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 14:00:27,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-15 14:00:27,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:00:27,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 14:00:27,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:00:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:28,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:00:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:28,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532421517] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:00:28,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:00:28,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 23] total 78 [2023-02-15 14:00:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105605248] [2023-02-15 14:00:28,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:00:28,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-02-15 14:00:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:00:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-02-15 14:00:28,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=4902, Unknown=0, NotChecked=0, Total=6162 [2023-02-15 14:00:28,944 INFO L87 Difference]: Start difference. First operand 401 states and 434 transitions. Second operand has 79 states, 78 states have (on average 3.5641025641025643) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:00:36,546 INFO L93 Difference]: Finished difference Result 1023 states and 1064 transitions. [2023-02-15 14:00:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-02-15 14:00:36,552 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 3.5641025641025643) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-02-15 14:00:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:00:36,554 INFO L225 Difference]: With dead ends: 1023 [2023-02-15 14:00:36,554 INFO L226 Difference]: Without dead ends: 1022 [2023-02-15 14:00:36,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28693 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=17823, Invalid=51083, Unknown=0, NotChecked=0, Total=68906 [2023-02-15 14:00:36,559 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2100 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 14:00:36,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 98 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 14:00:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2023-02-15 14:00:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 363. [2023-02-15 14:00:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.0997229916897506) internal successors, (397), 362 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 397 transitions. [2023-02-15 14:00:36,836 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 397 transitions. Word has length 94 [2023-02-15 14:00:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:00:36,836 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 397 transitions. [2023-02-15 14:00:36,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 3.5641025641025643) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:00:36,837 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 397 transitions. [2023-02-15 14:00:36,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-15 14:00:36,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:00:36,838 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2023-02-15 14:00:36,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 14:00:37,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:00:37,044 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 14:00:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:00:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -190624373, now seen corresponding path program 10 times [2023-02-15 14:00:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:00:37,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571043687] [2023-02-15 14:00:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:00:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:00:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:00:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:37,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:00:37,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571043687] [2023-02-15 14:00:37,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571043687] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:00:37,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023865011] [2023-02-15 14:00:37,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 14:00:37,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:00:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:00:37,643 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:00:37,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 14:00:37,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 14:00:37,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:00:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-15 14:00:37,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:00:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:38,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:00:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:00:39,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023865011] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:00:39,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:00:39,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 118 [2023-02-15 14:00:39,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981096270] [2023-02-15 14:00:39,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:00:39,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-02-15 14:00:39,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:00:39,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-02-15 14:00:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2779, Invalid=11263, Unknown=0, NotChecked=0, Total=14042 [2023-02-15 14:00:39,883 INFO L87 Difference]: Start difference. First operand 363 states and 397 transitions. Second operand has 119 states, 118 states have (on average 2.76271186440678) internal successors, (326), 119 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:01:20,047 INFO L93 Difference]: Finished difference Result 2325 states and 2387 transitions. [2023-02-15 14:01:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 602 states. [2023-02-15 14:01:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.76271186440678) internal successors, (326), 119 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-02-15 14:01:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:01:20,051 INFO L225 Difference]: With dead ends: 2325 [2023-02-15 14:01:20,051 INFO L226 Difference]: Without dead ends: 2324 [2023-02-15 14:01:20,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 698 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229628 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=98873, Invalid=390427, Unknown=0, NotChecked=0, Total=489300 [2023-02-15 14:01:20,069 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7404 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13974 mSolverCounterSat, 1806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7404 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1806 IncrementalHoareTripleChecker+Valid, 13974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-02-15 14:01:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7404 Valid, 30 Invalid, 15780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1806 Valid, 13974 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-02-15 14:01:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2023-02-15 14:01:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 389. [2023-02-15 14:01:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.103359173126615) internal successors, (427), 388 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 427 transitions. [2023-02-15 14:01:20,408 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 427 transitions. Word has length 110 [2023-02-15 14:01:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:01:20,408 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 427 transitions. [2023-02-15 14:01:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.76271186440678) internal successors, (326), 119 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:01:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 427 transitions. [2023-02-15 14:01:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-15 14:01:20,410 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:01:20,410 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-02-15 14:01:20,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 14:01:20,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:20,610 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 14:01:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:01:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 69722294, now seen corresponding path program 11 times [2023-02-15 14:01:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:01:20,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861720533] [2023-02-15 14:01:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:01:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:01:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:01:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:21,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:01:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861720533] [2023-02-15 14:01:21,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861720533] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:01:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413091712] [2023-02-15 14:01:21,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 14:01:21,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:01:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:01:21,387 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:01:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 14:01:21,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-02-15 14:01:21,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:01:21,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 14:01:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:01:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:22,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:01:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:01:24,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413091712] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:01:24,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:01:24,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 136 [2023-02-15 14:01:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147821716] [2023-02-15 14:01:24,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:01:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-02-15 14:01:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:01:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-02-15 14:01:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3670, Invalid=14962, Unknown=0, NotChecked=0, Total=18632 [2023-02-15 14:01:24,247 INFO L87 Difference]: Start difference. First operand 389 states and 427 transitions. Second operand has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:02:30,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:02:30,942 INFO L93 Difference]: Finished difference Result 2785 states and 2855 transitions. [2023-02-15 14:02:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 799 states. [2023-02-15 14:02:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-02-15 14:02:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 14:02:30,946 INFO L225 Difference]: With dead ends: 2785 [2023-02-15 14:02:30,946 INFO L226 Difference]: Without dead ends: 2784 [2023-02-15 14:02:30,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400882 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=165156, Invalid=665676, Unknown=0, NotChecked=0, Total=830832 [2023-02-15 14:02:30,981 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10167 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 22513 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10167 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 25093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 22513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-02-15 14:02:30,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10167 Valid, 38 Invalid, 25093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2580 Valid, 22513 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-02-15 14:02:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2023-02-15 14:02:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 424. [2023-02-15 14:02:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 422 states have (on average 1.1090047393364928) internal successors, (468), 423 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:02:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 468 transitions. [2023-02-15 14:02:31,422 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 468 transitions. Word has length 126 [2023-02-15 14:02:31,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 14:02:31,422 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 468 transitions. [2023-02-15 14:02:31,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:02:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 468 transitions. [2023-02-15 14:02:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-15 14:02:31,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 14:02:31,423 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 14:02:31,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 14:02:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:31,624 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-15 14:02:31,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:02:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 326639796, now seen corresponding path program 12 times [2023-02-15 14:02:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:02:31,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275073404] [2023-02-15 14:02:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:02:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:02:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:02:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 1317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:02:32,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:02:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275073404] [2023-02-15 14:02:32,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275073404] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:02:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557565781] [2023-02-15 14:02:32,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 14:02:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:02:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:02:32,222 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 14:02:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 14:02:32,270 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-02-15 14:02:32,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:02:32,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 14:02:32,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:02:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 1317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:02:33,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:02:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 1317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:02:34,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557565781] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:02:34,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:02:34,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 50, 29] total 106 [2023-02-15 14:02:34,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134286708] [2023-02-15 14:02:34,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:02:34,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-02-15 14:02:34,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:02:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-02-15 14:02:34,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2968, Invalid=8374, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 14:02:34,146 INFO L87 Difference]: Start difference. First operand 424 states and 468 transitions. Second operand has 107 states, 106 states have (on average 3.641509433962264) internal successors, (386), 107 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)