./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 791161d1 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-?-791161d [2022-07-23 13:23:19,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:23:19,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:23:19,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:23:19,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:23:19,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:23:19,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:23:19,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:23:19,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:23:19,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:23:19,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:23:19,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:23:19,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:23:19,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:23:19,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:23:19,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:23:19,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:23:19,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:23:19,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:23:19,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:23:19,325 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:23:19,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:23:19,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:23:19,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:23:19,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:23:19,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:23:19,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:23:19,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:23:19,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:23:19,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:23:19,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:23:19,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:23:19,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:23:19,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:23:19,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:23:19,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:23:19,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:23:19,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:23:19,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:23:19,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:23:19,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:23:19,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:23:19,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:23:19,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:23:19,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:23:19,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:23:19,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:23:19,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:23:19,375 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:23:19,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:23:19,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:23:19,376 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:23:19,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:23:19,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:23:19,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:23:19,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:23:19,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:23:19,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:23:19,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:23:19,378 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:23:19,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:23:19,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:23:19,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:23:19,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:23:19,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:23:19,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:23:19,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:23:19,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:23:19,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:23:19,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:23:19,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:23:19,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:23:19,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:23:19,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2022-07-23 13:23:19,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:23:19,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:23:19,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:23:19,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:23:19,669 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:23:19,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-07-23 13:23:19,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7515bb832/4ad6a6395de84374a71d65b83de5d170/FLAG4746c68c4 [2022-07-23 13:23:20,141 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:23:20,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-07-23 13:23:20,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7515bb832/4ad6a6395de84374a71d65b83de5d170/FLAG4746c68c4 [2022-07-23 13:23:20,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7515bb832/4ad6a6395de84374a71d65b83de5d170 [2022-07-23 13:23:20,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:23:20,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:23:20,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:23:20,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:23:20,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:23:20,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342a5044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20, skipping insertion in model container [2022-07-23 13:23:20,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:23:20,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:23:20,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:23:20,775 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:23:20,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:23:20,798 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:23:20,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20 WrapperNode [2022-07-23 13:23:20,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:23:20,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:23:20,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:23:20,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:23:20,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,828 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-07-23 13:23:20,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:23:20,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:23:20,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:23:20,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:23:20,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:23:20,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:23:20,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:23:20,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:23:20,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (1/1) ... [2022-07-23 13:23:20,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:23:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:20,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:23:20,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:23:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:23:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:23:20,973 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:23:20,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:23:21,110 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:23:21,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:23:21,134 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 13:23:21,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:23:21 BoogieIcfgContainer [2022-07-23 13:23:21,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:23:21,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:23:21,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:23:21,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:23:21,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:23:20" (1/3) ... [2022-07-23 13:23:21,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a74e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:23:21, skipping insertion in model container [2022-07-23 13:23:21,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:23:20" (2/3) ... [2022-07-23 13:23:21,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376a74e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:23:21, skipping insertion in model container [2022-07-23 13:23:21,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:23:21" (3/3) ... [2022-07-23 13:23:21,143 INFO L111 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-07-23 13:23:21,156 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:23:21,156 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-23 13:23:21,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:23:21,210 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11f9a8fe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ffff080 [2022-07-23 13:23:21,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-23 13:23:21,213 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) [2022-07-23 13:23:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:23:21,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:21,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:23:21,222 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)] === [2022-07-23 13:23:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2022-07-23 13:23:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:21,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903161643] [2022-07-23 13:23:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:21,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:21,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903161643] [2022-07-23 13:23:21,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903161643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:21,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:21,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:23:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576981260] [2022-07-23 13:23:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:21,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:23:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:23:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:23:21,408 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) [2022-07-23 13:23:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:21,484 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2022-07-23 13:23:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:23:21,487 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 [2022-07-23 13:23:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:21,493 INFO L225 Difference]: With dead ends: 61 [2022-07-23 13:23:21,493 INFO L226 Difference]: Without dead ends: 31 [2022-07-23 13:23:21,496 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 [2022-07-23 13:23:21,500 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:21,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-23 13:23:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-07-23 13:23:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:21,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-23 13:23:21,545 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 5 [2022-07-23 13:23:21,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:21,545 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-23 13:23:21,546 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) [2022-07-23 13:23:21,546 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-23 13:23:21,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:23:21,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:21,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:23:21,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:23:21,548 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)] === [2022-07-23 13:23:21,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2022-07-23 13:23:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:21,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479708194] [2022-07-23 13:23:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:21,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:21,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:21,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479708194] [2022-07-23 13:23:21,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479708194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:21,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:21,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:23:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071111420] [2022-07-23 13:23:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:23:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:23:21,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:23:21,600 INFO L87 Difference]: Start difference. First operand 27 states and 32 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) [2022-07-23 13:23:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:21,618 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-07-23 13:23:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:23:21,618 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 [2022-07-23 13:23:21,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:21,619 INFO L225 Difference]: With dead ends: 31 [2022-07-23 13:23:21,619 INFO L226 Difference]: Without dead ends: 30 [2022-07-23 13:23:21,620 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 [2022-07-23 13:23:21,621 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:21,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:23:21,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-23 13:23:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-23 13:23:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 29 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) [2022-07-23 13:23:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-07-23 13:23:21,627 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 6 [2022-07-23 13:23:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:21,627 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-07-23 13:23:21,628 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) [2022-07-23 13:23:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-07-23 13:23:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:23:21,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:21,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:21,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:23:21,629 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)] === [2022-07-23 13:23:21,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash 124122716, now seen corresponding path program 1 times [2022-07-23 13:23:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:21,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619695779] [2022-07-23 13:23:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:21,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:21,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619695779] [2022-07-23 13:23:21,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619695779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:21,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:21,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:23:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831620615] [2022-07-23 13:23:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:21,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:23:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:23:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:23:21,679 INFO L87 Difference]: Start difference. First operand 30 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) [2022-07-23 13:23:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:21,763 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-07-23 13:23:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:23:21,763 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 [2022-07-23 13:23:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:21,765 INFO L225 Difference]: With dead ends: 49 [2022-07-23 13:23:21,771 INFO L226 Difference]: Without dead ends: 48 [2022-07-23 13:23:21,772 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 [2022-07-23 13:23:21,773 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:21,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 19 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-23 13:23:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2022-07-23 13:23:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2022-07-23 13:23:21,784 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 8 [2022-07-23 13:23:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:21,785 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2022-07-23 13:23:21,786 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) [2022-07-23 13:23:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2022-07-23 13:23:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:23:21,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:21,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:23:21,787 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)] === [2022-07-23 13:23:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 124122767, now seen corresponding path program 1 times [2022-07-23 13:23:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684964265] [2022-07-23 13:23:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:21,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684964265] [2022-07-23 13:23:21,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684964265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:21,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:21,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:23:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806707508] [2022-07-23 13:23:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:23:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:23:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:23:21,823 INFO L87 Difference]: Start difference. First operand 38 states and 49 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) [2022-07-23 13:23:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:21,868 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-07-23 13:23:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:23:21,869 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 [2022-07-23 13:23:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:21,870 INFO L225 Difference]: With dead ends: 64 [2022-07-23 13:23:21,870 INFO L226 Difference]: Without dead ends: 62 [2022-07-23 13:23:21,871 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 [2022-07-23 13:23:21,872 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:21,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:23:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-23 13:23:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2022-07-23 13:23:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 42 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2022-07-23 13:23:21,880 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 8 [2022-07-23 13:23:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:21,881 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2022-07-23 13:23:21,881 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) [2022-07-23 13:23:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2022-07-23 13:23:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:23:21,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:21,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:23:21,882 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)] === [2022-07-23 13:23:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -447163028, now seen corresponding path program 1 times [2022-07-23 13:23:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079673480] [2022-07-23 13:23:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:21,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079673480] [2022-07-23 13:23:21,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079673480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:21,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:21,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:23:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536995622] [2022-07-23 13:23:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:23:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:21,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:23:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:23:21,944 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-07-23 13:23:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:22,009 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2022-07-23 13:23:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:23:22,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-07-23 13:23:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:22,010 INFO L225 Difference]: With dead ends: 60 [2022-07-23 13:23:22,011 INFO L226 Difference]: Without dead ends: 59 [2022-07-23 13:23:22,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:23:22,012 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:22,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-23 13:23:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2022-07-23 13:23:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2022-07-23 13:23:22,019 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 9 [2022-07-23 13:23:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:22,020 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2022-07-23 13:23:22,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-07-23 13:23:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2022-07-23 13:23:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:23:22,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:22,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:22,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:23:22,021 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)] === [2022-07-23 13:23:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -447161458, now seen corresponding path program 1 times [2022-07-23 13:23:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:22,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777446668] [2022-07-23 13:23:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:22,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:22,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777446668] [2022-07-23 13:23:22,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777446668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:22,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:22,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:23:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176701709] [2022-07-23 13:23:22,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:22,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:23:22,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:23:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:23:22,066 INFO L87 Difference]: Start difference. First operand 52 states and 72 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) [2022-07-23 13:23:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:22,108 INFO L93 Difference]: Finished difference Result 97 states and 136 transitions. [2022-07-23 13:23:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:23:22,109 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 [2022-07-23 13:23:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:22,110 INFO L225 Difference]: With dead ends: 97 [2022-07-23 13:23:22,110 INFO L226 Difference]: Without dead ends: 95 [2022-07-23 13:23:22,110 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 [2022-07-23 13:23:22,111 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:22,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:23:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-23 13:23:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2022-07-23 13:23:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2022-07-23 13:23:22,123 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 9 [2022-07-23 13:23:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2022-07-23 13:23:22,124 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) [2022-07-23 13:23:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2022-07-23 13:23:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 13:23:22,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:22,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:22,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 13:23:22,125 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)] === [2022-07-23 13:23:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash -977103247, now seen corresponding path program 1 times [2022-07-23 13:23:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:22,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514407015] [2022-07-23 13:23:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:22,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514407015] [2022-07-23 13:23:22,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514407015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:22,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:22,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:23:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450639442] [2022-07-23 13:23:22,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:23:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:23:22,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:23:22,175 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-07-23 13:23:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:22,189 INFO L93 Difference]: Finished difference Result 87 states and 124 transitions. [2022-07-23 13:23:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:23:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 [2022-07-23 13:23:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:22,194 INFO L225 Difference]: With dead ends: 87 [2022-07-23 13:23:22,194 INFO L226 Difference]: Without dead ends: 86 [2022-07-23 13:23:22,195 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 [2022-07-23 13:23:22,196 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:22,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:23:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-23 13:23:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-07-23 13:23:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 85 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2022-07-23 13:23:22,224 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 10 [2022-07-23 13:23:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:22,224 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2022-07-23 13:23:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2022-07-23 13:23:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2022-07-23 13:23:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:23:22,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:22,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:22,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 13:23:22,226 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)] === [2022-07-23 13:23:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash -225429520, now seen corresponding path program 1 times [2022-07-23 13:23:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:22,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867849379] [2022-07-23 13:23:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:22,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867849379] [2022-07-23 13:23:22,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867849379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:23:22,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:23:22,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:23:22,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592157161] [2022-07-23 13:23:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:23:22,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:23:22,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:23:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:23:22,277 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-07-23 13:23:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:22,303 INFO L93 Difference]: Finished difference Result 86 states and 118 transitions. [2022-07-23 13:23:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:23:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2022-07-23 13:23:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:22,305 INFO L225 Difference]: With dead ends: 86 [2022-07-23 13:23:22,305 INFO L226 Difference]: Without dead ends: 85 [2022-07-23 13:23:22,305 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 [2022-07-23 13:23:22,306 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:22,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:23:22,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-23 13:23:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-07-23 13:23:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 84 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 112 transitions. [2022-07-23 13:23:22,317 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 112 transitions. Word has length 11 [2022-07-23 13:23:22,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:22,318 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 112 transitions. [2022-07-23 13:23:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2022-07-23 13:23:22,318 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2022-07-23 13:23:22,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 13:23:22,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:22,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 13:23:22,319 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)] === [2022-07-23 13:23:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -458138511, now seen corresponding path program 1 times [2022-07-23 13:23:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47609851] [2022-07-23 13:23:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47609851] [2022-07-23 13:23:22,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47609851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:22,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472175037] [2022-07-23 13:23:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:22,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:22,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:22,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:22,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:23:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:22,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:23:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472175037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:22,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:22,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-07-23 13:23:22,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066787567] [2022-07-23 13:23:22,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:23:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:23:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:23:22,643 INFO L87 Difference]: Start difference. First operand 85 states and 112 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) [2022-07-23 13:23:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:23,022 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2022-07-23 13:23:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-23 13:23:23,023 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 [2022-07-23 13:23:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:23,029 INFO L225 Difference]: With dead ends: 215 [2022-07-23 13:23:23,029 INFO L226 Difference]: Without dead ends: 214 [2022-07-23 13:23:23,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=389, Unknown=0, NotChecked=0, Total=600 [2022-07-23 13:23:23,034 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 162 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:23,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 33 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:23:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-23 13:23:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 144. [2022-07-23 13:23:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 143 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 191 transitions. [2022-07-23 13:23:23,056 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 191 transitions. Word has length 14 [2022-07-23 13:23:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:23,057 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 191 transitions. [2022-07-23 13:23:23,057 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) [2022-07-23 13:23:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 191 transitions. [2022-07-23 13:23:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 13:23:23,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:23,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-23 13:23:23,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 13:23:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:23,280 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)] === [2022-07-23 13:23:23,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1317391881, now seen corresponding path program 1 times [2022-07-23 13:23:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:23,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112011806] [2022-07-23 13:23:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:23,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112011806] [2022-07-23 13:23:23,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112011806] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578991534] [2022-07-23 13:23:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:23,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:23,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:23,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:23,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:23:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:23,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:23:23,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:23,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:23,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578991534] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:23,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:23,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-07-23 13:23:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344467400] [2022-07-23 13:23:23,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:23,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:23:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:23,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:23:23,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:23:23,508 INFO L87 Difference]: Start difference. First operand 144 states and 191 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) [2022-07-23 13:23:23,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:23,937 INFO L93 Difference]: Finished difference Result 261 states and 361 transitions. [2022-07-23 13:23:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-23 13:23:23,939 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 [2022-07-23 13:23:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:23,940 INFO L225 Difference]: With dead ends: 261 [2022-07-23 13:23:23,940 INFO L226 Difference]: Without dead ends: 258 [2022-07-23 13:23:23,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2022-07-23 13:23:23,941 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 208 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:23,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 31 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:23:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-23 13:23:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 167. [2022-07-23 13:23:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 163 states have (on average 1.2883435582822085) internal successors, (210), 166 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) [2022-07-23 13:23:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 210 transitions. [2022-07-23 13:23:23,961 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 210 transitions. Word has length 15 [2022-07-23 13:23:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:23,962 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 210 transitions. [2022-07-23 13:23:23,962 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) [2022-07-23 13:23:23,962 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 210 transitions. [2022-07-23 13:23:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 13:23:23,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:23,963 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:23,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 13:23:24,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash -23572369, now seen corresponding path program 1 times [2022-07-23 13:23:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:24,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130985858] [2022-07-23 13:23:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:24,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:24,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130985858] [2022-07-23 13:23:24,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130985858] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:24,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653751936] [2022-07-23 13:23:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:24,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:24,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:24,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:24,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:23:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:24,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:23:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:24,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:24,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653751936] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:24,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:24,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-23 13:23:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33687077] [2022-07-23 13:23:24,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 13:23:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 13:23:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-23 13:23:24,334 INFO L87 Difference]: Start difference. First operand 167 states and 210 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:24,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:24,413 INFO L93 Difference]: Finished difference Result 377 states and 498 transitions. [2022-07-23 13:23:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 13:23:24,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 18 [2022-07-23 13:23:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:24,415 INFO L225 Difference]: With dead ends: 377 [2022-07-23 13:23:24,415 INFO L226 Difference]: Without dead ends: 375 [2022-07-23 13:23:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-23 13:23:24,421 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 97 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:24,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 42 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-23 13:23:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 274. [2022-07-23 13:23:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 270 states have (on average 1.2592592592592593) internal successors, (340), 273 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 340 transitions. [2022-07-23 13:23:24,447 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 340 transitions. Word has length 18 [2022-07-23 13:23:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:24,447 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 340 transitions. [2022-07-23 13:23:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 340 transitions. [2022-07-23 13:23:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-23 13:23:24,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:24,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:24,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:24,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1589103225, now seen corresponding path program 1 times [2022-07-23 13:23:24,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:24,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850137290] [2022-07-23 13:23:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:24,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:23:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850137290] [2022-07-23 13:23:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850137290] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865923941] [2022-07-23 13:23:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:24,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:24,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:24,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:24,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:23:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:24,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:23:24,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:23:24,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:23:24,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865923941] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:24,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:24,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2022-07-23 13:23:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965695894] [2022-07-23 13:23:24,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:24,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 13:23:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 13:23:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:23:24,994 INFO L87 Difference]: Start difference. First operand 274 states and 340 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:25,586 INFO L93 Difference]: Finished difference Result 511 states and 647 transitions. [2022-07-23 13:23:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-23 13:23:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 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 24 [2022-07-23 13:23:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:25,589 INFO L225 Difference]: With dead ends: 511 [2022-07-23 13:23:25,589 INFO L226 Difference]: Without dead ends: 508 [2022-07-23 13:23:25,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2022-07-23 13:23:25,591 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 120 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:25,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 10 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:23:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-07-23 13:23:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 305. [2022-07-23 13:23:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 301 states have (on average 1.239202657807309) internal successors, (373), 304 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 373 transitions. [2022-07-23 13:23:25,620 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 373 transitions. Word has length 24 [2022-07-23 13:23:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:25,620 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 373 transitions. [2022-07-23 13:23:25,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 373 transitions. [2022-07-23 13:23:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-23 13:23:25,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:25,622 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:25,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:25,831 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:25,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:25,832 INFO L85 PathProgramCache]: Analyzing trace with hash -809405228, now seen corresponding path program 2 times [2022-07-23 13:23:25,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:25,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836658698] [2022-07-23 13:23:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:25,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:25,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836658698] [2022-07-23 13:23:25,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836658698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68060140] [2022-07-23 13:23:25,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:23:25,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:25,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:25,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:25,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:23:25,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:23:25,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:25,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:23:25,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:26,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:26,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68060140] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:26,243 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:26,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2022-07-23 13:23:26,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168358723] [2022-07-23 13:23:26,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:26,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-23 13:23:26,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:26,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-23 13:23:26,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-23 13:23:26,246 INFO L87 Difference]: Start difference. First operand 305 states and 373 transitions. Second operand has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:27,448 INFO L93 Difference]: Finished difference Result 1478 states and 1783 transitions. [2022-07-23 13:23:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-23 13:23:27,448 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 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 29 [2022-07-23 13:23:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:27,454 INFO L225 Difference]: With dead ends: 1478 [2022-07-23 13:23:27,454 INFO L226 Difference]: Without dead ends: 1477 [2022-07-23 13:23:27,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2575 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1779, Invalid=4701, Unknown=0, NotChecked=0, Total=6480 [2022-07-23 13:23:27,457 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 485 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:27,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 34 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:23:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-07-23 13:23:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 705. [2022-07-23 13:23:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 701 states have (on average 1.24679029957204) internal successors, (874), 704 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 874 transitions. [2022-07-23 13:23:27,522 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 874 transitions. Word has length 29 [2022-07-23 13:23:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:27,523 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 874 transitions. [2022-07-23 13:23:27,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 874 transitions. [2022-07-23 13:23:27,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 13:23:27,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:27,525 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-07-23 13:23:27,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:27,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 13:23:27,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2094331952, now seen corresponding path program 2 times [2022-07-23 13:23:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:27,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462840462] [2022-07-23 13:23:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:27,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:27,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462840462] [2022-07-23 13:23:27,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462840462] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712088097] [2022-07-23 13:23:27,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:23:27,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:27,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:27,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:27,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:23:27,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:23:27,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:27,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 13:23:27,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:28,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:34,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712088097] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:34,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:34,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-07-23 13:23:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555732383] [2022-07-23 13:23:34,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:34,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-23 13:23:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:34,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-23 13:23:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=742, Unknown=3, NotChecked=0, Total=992 [2022-07-23 13:23:34,450 INFO L87 Difference]: Start difference. First operand 705 states and 874 transitions. Second operand has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:36,099 INFO L93 Difference]: Finished difference Result 1349 states and 1617 transitions. [2022-07-23 13:23:36,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-23 13:23:36,099 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 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 32 [2022-07-23 13:23:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:36,104 INFO L225 Difference]: With dead ends: 1349 [2022-07-23 13:23:36,104 INFO L226 Difference]: Without dead ends: 1348 [2022-07-23 13:23:36,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1303, Invalid=2854, Unknown=3, NotChecked=0, Total=4160 [2022-07-23 13:23:36,107 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 585 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:36,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 98 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 723 Invalid, 0 Unknown, 62 Unchecked, 0.6s Time] [2022-07-23 13:23:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2022-07-23 13:23:36,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 825. [2022-07-23 13:23:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 821 states have (on average 1.2375152253349573) internal successors, (1016), 824 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1016 transitions. [2022-07-23 13:23:36,175 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1016 transitions. Word has length 32 [2022-07-23 13:23:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:36,176 INFO L495 AbstractCegarLoop]: Abstraction has 825 states and 1016 transitions. [2022-07-23 13:23:36,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.967741935483871) internal successors, (92), 32 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1016 transitions. [2022-07-23 13:23:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-23 13:23:36,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:36,177 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1] [2022-07-23 13:23:36,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:36,391 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1671510570, now seen corresponding path program 1 times [2022-07-23 13:23:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:36,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926376537] [2022-07-23 13:23:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 13:23:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926376537] [2022-07-23 13:23:36,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926376537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605315272] [2022-07-23 13:23:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:36,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:36,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:23:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:36,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:23:36,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:36,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:36,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605315272] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:36,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:36,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-07-23 13:23:36,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461798554] [2022-07-23 13:23:36,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:36,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 13:23:36,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 13:23:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:23:36,666 INFO L87 Difference]: Start difference. First operand 825 states and 1016 transitions. Second operand has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:37,480 INFO L93 Difference]: Finished difference Result 3021 states and 3797 transitions. [2022-07-23 13:23:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-23 13:23:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 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 36 [2022-07-23 13:23:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:37,490 INFO L225 Difference]: With dead ends: 3021 [2022-07-23 13:23:37,490 INFO L226 Difference]: Without dead ends: 2808 [2022-07-23 13:23:37,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=870, Invalid=1992, Unknown=0, NotChecked=0, Total=2862 [2022-07-23 13:23:37,497 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 375 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:37,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 30 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:23:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2022-07-23 13:23:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 386. [2022-07-23 13:23:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 383 states have (on average 1.2114882506527416) internal successors, (464), 385 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 464 transitions. [2022-07-23 13:23:37,572 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 464 transitions. Word has length 36 [2022-07-23 13:23:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 464 transitions. [2022-07-23 13:23:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 464 transitions. [2022-07-23 13:23:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-23 13:23:37,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:37,576 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:37,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:37,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:37,791 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2031190993, now seen corresponding path program 2 times [2022-07-23 13:23:37,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:37,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069632787] [2022-07-23 13:23:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069632787] [2022-07-23 13:23:37,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069632787] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533115530] [2022-07-23 13:23:37,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:23:37,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:37,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:37,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:37,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:23:37,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:23:37,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:37,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:23:37,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:37,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:38,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533115530] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:38,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:38,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-23 13:23:38,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178387347] [2022-07-23 13:23:38,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:38,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-23 13:23:38,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:38,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-23 13:23:38,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-07-23 13:23:38,057 INFO L87 Difference]: Start difference. First operand 386 states and 464 transitions. Second operand has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:38,349 INFO L93 Difference]: Finished difference Result 1586 states and 2023 transitions. [2022-07-23 13:23:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-23 13:23:38,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 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 38 [2022-07-23 13:23:38,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:38,355 INFO L225 Difference]: With dead ends: 1586 [2022-07-23 13:23:38,355 INFO L226 Difference]: Without dead ends: 1584 [2022-07-23 13:23:38,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2022-07-23 13:23:38,356 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 207 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:38,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 84 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2022-07-23 13:23:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1117. [2022-07-23 13:23:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1114 states have (on average 1.1840215439856374) internal successors, (1319), 1116 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1319 transitions. [2022-07-23 13:23:38,514 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1319 transitions. Word has length 38 [2022-07-23 13:23:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:38,516 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1319 transitions. [2022-07-23 13:23:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.933333333333334) internal successors, (74), 16 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1319 transitions. [2022-07-23 13:23:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 13:23:38,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:38,518 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-07-23 13:23:38,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-23 13:23:38,732 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:38,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1441176329, now seen corresponding path program 3 times [2022-07-23 13:23:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:38,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325106254] [2022-07-23 13:23:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:38,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325106254] [2022-07-23 13:23:38,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325106254] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:38,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569421053] [2022-07-23 13:23:38,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:23:38,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:38,859 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:38,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:23:38,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-23 13:23:38,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:38,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 13:23:38,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:39,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:39,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569421053] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:39,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:39,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 36 [2022-07-23 13:23:39,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627466391] [2022-07-23 13:23:39,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-23 13:23:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-23 13:23:39,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2022-07-23 13:23:39,470 INFO L87 Difference]: Start difference. First operand 1117 states and 1319 transitions. Second operand has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:45,790 INFO L93 Difference]: Finished difference Result 9975 states and 11774 transitions. [2022-07-23 13:23:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-07-23 13:23:45,791 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 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 45 [2022-07-23 13:23:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:45,817 INFO L225 Difference]: With dead ends: 9975 [2022-07-23 13:23:45,818 INFO L226 Difference]: Without dead ends: 9974 [2022-07-23 13:23:45,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29069 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=13431, Invalid=47331, Unknown=0, NotChecked=0, Total=60762 [2022-07-23 13:23:45,829 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1171 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:45,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 41 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-23 13:23:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2022-07-23 13:23:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 3886. [2022-07-23 13:23:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3883 states have (on average 1.1949523564254443) internal successors, (4640), 3885 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 4640 transitions. [2022-07-23 13:23:46,613 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 4640 transitions. Word has length 45 [2022-07-23 13:23:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:46,613 INFO L495 AbstractCegarLoop]: Abstraction has 3886 states and 4640 transitions. [2022-07-23 13:23:46,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.638888888888889) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 4640 transitions. [2022-07-23 13:23:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 13:23:46,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:46,615 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:46,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:23:46,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2058787874, now seen corresponding path program 4 times [2022-07-23 13:23:46,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:46,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815502045] [2022-07-23 13:23:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-23 13:23:46,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815502045] [2022-07-23 13:23:46,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815502045] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092297953] [2022-07-23 13:23:46,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:23:46,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:46,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:46,948 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:46,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:23:46,990 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:23:46,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:46,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 13:23:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-23 13:23:47,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 108 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-23 13:23:47,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092297953] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:47,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:47,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2022-07-23 13:23:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758431626] [2022-07-23 13:23:47,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:47,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 13:23:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 13:23:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:23:47,253 INFO L87 Difference]: Start difference. First operand 3886 states and 4640 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:48,111 INFO L93 Difference]: Finished difference Result 6454 states and 7735 transitions. [2022-07-23 13:23:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 13:23:48,111 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 55 [2022-07-23 13:23:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:48,113 INFO L225 Difference]: With dead ends: 6454 [2022-07-23 13:23:48,113 INFO L226 Difference]: Without dead ends: 373 [2022-07-23 13:23:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2022-07-23 13:23:48,123 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:48,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 25 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:23:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-07-23 13:23:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 143. [2022-07-23 13:23:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 140 states have (on average 1.1357142857142857) internal successors, (159), 142 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2022-07-23 13:23:48,216 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 55 [2022-07-23 13:23:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:48,216 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2022-07-23 13:23:48,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:48,216 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2022-07-23 13:23:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 13:23:48,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:48,217 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:23:48,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:23:48,439 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1009744626, now seen corresponding path program 5 times [2022-07-23 13:23:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:48,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559071021] [2022-07-23 13:23:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:48,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559071021] [2022-07-23 13:23:48,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559071021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936557591] [2022-07-23 13:23:48,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:23:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:48,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:48,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:48,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:23:48,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-07-23 13:23:48,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:23:48,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 13:23:48,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:49,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:24:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:09,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936557591] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:24:09,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:24:09,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 55 [2022-07-23 13:24:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379252437] [2022-07-23 13:24:09,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:24:09,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-23 13:24:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:24:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-23 13:24:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=2509, Unknown=6, NotChecked=0, Total=3080 [2022-07-23 13:24:09,893 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:24:41,414 INFO L93 Difference]: Finished difference Result 301 states and 324 transitions. [2022-07-23 13:24:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-23 13:24:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 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 55 [2022-07-23 13:24:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:24:41,416 INFO L225 Difference]: With dead ends: 301 [2022-07-23 13:24:41,417 INFO L226 Difference]: Without dead ends: 300 [2022-07-23 13:24:41,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3077 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=2128, Invalid=6602, Unknown=12, NotChecked=0, Total=8742 [2022-07-23 13:24:41,419 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 589 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:24:41,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 108 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 994 Invalid, 0 Unknown, 399 Unchecked, 0.6s Time] [2022-07-23 13:24:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-23 13:24:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 179. [2022-07-23 13:24:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.1079545454545454) internal successors, (195), 178 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 195 transitions. [2022-07-23 13:24:41,551 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 195 transitions. Word has length 55 [2022-07-23 13:24:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:24:41,551 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 195 transitions. [2022-07-23 13:24:41,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.9272727272727272) internal successors, (161), 56 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:24:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 195 transitions. [2022-07-23 13:24:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-23 13:24:41,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:24:41,552 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-07-23 13:24:41,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:24:41,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:24:41,775 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:24:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:24:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1452116925, now seen corresponding path program 6 times [2022-07-23 13:24:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:24:41,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100741122] [2022-07-23 13:24:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:24:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:24:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:24:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:41,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:24:41,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100741122] [2022-07-23 13:24:41,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100741122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:24:41,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670826439] [2022-07-23 13:24:41,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:24:41,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:24:41,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:24:41,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:24:41,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:24:42,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-07-23 13:24:42,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:24:42,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 13:24:42,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:24:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:24:42,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:25:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:25:25,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670826439] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:25:25,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:25:25,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2022-07-23 13:25:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309562120] [2022-07-23 13:25:25,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:25:25,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-23 13:25:25,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:25:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-23 13:25:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=2864, Unknown=15, NotChecked=0, Total=3422 [2022-07-23 13:25:25,137 INFO L87 Difference]: Start difference. First operand 179 states and 195 transitions. Second operand has 59 states, 58 states have (on average 2.9827586206896552) internal successors, (173), 59 states have internal predecessors, (173), 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)