./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter1.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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 08:25:40,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:25:40,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:25:40,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:25:40,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:25:40,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:25:40,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:25:40,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:25:40,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:25:40,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:25:40,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:25:40,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:25:40,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:25:40,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:25:40,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:25:40,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:25:40,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:25:40,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:25:40,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:25:40,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:25:40,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:25:40,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:25:40,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:25:40,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:25:40,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:25:40,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:25:40,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:25:40,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:25:40,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:25:40,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:25:40,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:25:40,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:25:40,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:25:40,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:25:40,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:25:40,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:25:40,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:25:40,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:25:40,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:25:40,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:25:40,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:25:40,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 08:25:40,375 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:25:40,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:25:40,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:25:40,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:25:40,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 08:25:40,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 08:25:40,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:25:40,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:25:40,378 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:25:40,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:25:40,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:25:40,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:25:40,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:25:40,380 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:25:40,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 08:25:40,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:25:40,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:25:40,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 08:25:40,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:25:40,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:25:40,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 08:25:40,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 08:25:40,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:25:40,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 08:25:40,383 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 08:25:40,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 08:25:40,383 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 08:25:40,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 08:25:40,383 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 08:25:40,384 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-02-18 08:25:40,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:25:40,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:25:40,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:25:40,630 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:25:40,632 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:25:40,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-18 08:25:41,698 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:25:41,891 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:25:41,892 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-18 08:25:41,896 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104808ac7/0703417d6d53482b934eca5ba616f4bc/FLAG7cdb4c3dd [2023-02-18 08:25:41,913 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104808ac7/0703417d6d53482b934eca5ba616f4bc [2023-02-18 08:25:41,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:25:41,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:25:41,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:25:41,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:25:41,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:25:41,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:25:41" (1/1) ... [2023-02-18 08:25:41,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9c58fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:41, skipping insertion in model container [2023-02-18 08:25:41,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:25:41" (1/1) ... [2023-02-18 08:25:41,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:25:41,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:25:42,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:25:42,087 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:25:42,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:25:42,106 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:25:42,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42 WrapperNode [2023-02-18 08:25:42,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:25:42,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:25:42,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:25:42,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:25:42,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,131 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-02-18 08:25:42,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:25:42,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:25:42,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:25:42,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:25:42,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:25:42,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:25:42,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:25:42,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:25:42,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (1/1) ... [2023-02-18 08:25:42,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:25:42,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:42,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 08:25:42,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 08:25:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-18 08:25:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-18 08:25:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:25:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:25:42,252 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:25:42,253 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:25:42,359 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:25:42,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:25:42,365 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 08:25:42,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:25:42 BoogieIcfgContainer [2023-02-18 08:25:42,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:25:42,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 08:25:42,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 08:25:42,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 08:25:42,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:25:41" (1/3) ... [2023-02-18 08:25:42,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165e458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:25:42, skipping insertion in model container [2023-02-18 08:25:42,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:25:42" (2/3) ... [2023-02-18 08:25:42,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165e458e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:25:42, skipping insertion in model container [2023-02-18 08:25:42,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:25:42" (3/3) ... [2023-02-18 08:25:42,374 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-02-18 08:25:42,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 08:25:42,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-18 08:25:42,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 08:25:42,457 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c942ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 08:25:42,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-18 08:25:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 08:25:42,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:42,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:42,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2023-02-18 08:25:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:42,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249942006] [2023-02-18 08:25:42,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:25:42,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:42,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249942006] [2023-02-18 08:25:42,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249942006] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:42,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:42,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:25:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801627714] [2023-02-18 08:25:42,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:25:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:25:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:25:42,673 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:42,750 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-18 08:25:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:25:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 08:25:42,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:42,766 INFO L225 Difference]: With dead ends: 65 [2023-02-18 08:25:42,767 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 08:25:42,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:25:42,774 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:42,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 08:25:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-18 08:25:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-18 08:25:42,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-18 08:25:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:42,816 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-18 08:25:42,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-18 08:25:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 08:25:42,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:42,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:42,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 08:25:42,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:42,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:42,819 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2023-02-18 08:25:42,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:42,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845779986] [2023-02-18 08:25:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:42,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:25:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845779986] [2023-02-18 08:25:42,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845779986] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:42,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:42,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:25:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049647939] [2023-02-18 08:25:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:42,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:25:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:42,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:25:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:25:42,916 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:42,952 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-18 08:25:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:25:42,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 08:25:42,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:42,958 INFO L225 Difference]: With dead ends: 34 [2023-02-18 08:25:42,958 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 08:25:42,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:25:42,960 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 08:25:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-18 08:25:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-18 08:25:42,967 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-18 08:25:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:42,968 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-18 08:25:42,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-18 08:25:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 08:25:42,969 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:42,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:42,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 08:25:42,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:42,970 INFO L85 PathProgramCache]: Analyzing trace with hash -114082075, now seen corresponding path program 1 times [2023-02-18 08:25:42,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:42,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324924238] [2023-02-18 08:25:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:42,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:25:43,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:43,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324924238] [2023-02-18 08:25:43,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324924238] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:43,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877513650] [2023-02-18 08:25:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:43,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:43,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:43,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 08:25:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 08:25:43,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:25:43,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:25:43,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877513650] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:43,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-18 08:25:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210773994] [2023-02-18 08:25:43,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:43,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 08:25:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 08:25:43,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-18 08:25:43,191 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:43,274 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-18 08:25:43,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 08:25:43,275 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 08:25:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:43,278 INFO L225 Difference]: With dead ends: 39 [2023-02-18 08:25:43,279 INFO L226 Difference]: Without dead ends: 38 [2023-02-18 08:25:43,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-18 08:25:43,280 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:43,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 75 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-18 08:25:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-18 08:25:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-18 08:25:43,290 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-18 08:25:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:43,290 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-18 08:25:43,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:25:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-18 08:25:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 08:25:43,291 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:43,291 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:43,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:43,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:43,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2023-02-18 08:25:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:43,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554525682] [2023-02-18 08:25:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 08:25:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554525682] [2023-02-18 08:25:43,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554525682] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:43,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:43,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:25:43,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803087517] [2023-02-18 08:25:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:43,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:25:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:43,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:25:43,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:25:43,542 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:43,551 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-18 08:25:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:25:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-18 08:25:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:43,553 INFO L225 Difference]: With dead ends: 34 [2023-02-18 08:25:43,553 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 08:25:43,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:25:43,557 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:43,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 08:25:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-18 08:25:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-18 08:25:43,570 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-18 08:25:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:43,570 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-18 08:25:43,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-18 08:25:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 08:25:43,573 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:43,573 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:43,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 08:25:43,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2023-02-18 08:25:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:43,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472352411] [2023-02-18 08:25:43,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 08:25:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:43,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472352411] [2023-02-18 08:25:43,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472352411] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:43,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:43,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:25:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569181478] [2023-02-18 08:25:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:43,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:25:43,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:25:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:25:43,646 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:43,665 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-18 08:25:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:25:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-18 08:25:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:43,667 INFO L225 Difference]: With dead ends: 31 [2023-02-18 08:25:43,667 INFO L226 Difference]: Without dead ends: 30 [2023-02-18 08:25:43,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:25:43,668 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:43,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-18 08:25:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-18 08:25:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-18 08:25:43,673 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-18 08:25:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:43,674 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-18 08:25:43,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-18 08:25:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 08:25:43,675 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:43,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:43,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 08:25:43,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2023-02-18 08:25:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:43,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446005076] [2023-02-18 08:25:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 08:25:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:43,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446005076] [2023-02-18 08:25:43,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446005076] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:43,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:43,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 08:25:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499465570] [2023-02-18 08:25:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:43,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:25:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:25:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:25:43,729 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:43,764 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-18 08:25:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:25:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-18 08:25:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:43,765 INFO L225 Difference]: With dead ends: 44 [2023-02-18 08:25:43,766 INFO L226 Difference]: Without dead ends: 41 [2023-02-18 08:25:43,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:25:43,768 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:43,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-18 08:25:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-18 08:25:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:25:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-18 08:25:43,780 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-18 08:25:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:43,781 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-18 08:25:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,781 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-18 08:25:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 08:25:43,782 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:43,782 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 08:25:43,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:43,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:43,785 INFO L85 PathProgramCache]: Analyzing trace with hash 468589560, now seen corresponding path program 1 times [2023-02-18 08:25:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:43,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149223385] [2023-02-18 08:25:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 08:25:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:43,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149223385] [2023-02-18 08:25:43,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149223385] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:43,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:25:43,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 08:25:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722551921] [2023-02-18 08:25:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:43,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:25:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:25:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:25:43,882 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:43,905 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-18 08:25:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:25:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-18 08:25:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:43,907 INFO L225 Difference]: With dead ends: 60 [2023-02-18 08:25:43,909 INFO L226 Difference]: Without dead ends: 38 [2023-02-18 08:25:43,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:25:43,910 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:43,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:43,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-18 08:25:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-18 08:25:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 08:25:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-18 08:25:43,919 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-18 08:25:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:43,920 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-18 08:25:43,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 08:25:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-18 08:25:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 08:25:43,921 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:43,921 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:43,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 08:25:43,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2023-02-18 08:25:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737490339] [2023-02-18 08:25:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 08:25:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:44,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737490339] [2023-02-18 08:25:44,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737490339] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:44,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317278219] [2023-02-18 08:25:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:44,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:44,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:44,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 08:25:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 08:25:44,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 08:25:44,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 08:25:44,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317278219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:25:44,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 08:25:44,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-18 08:25:44,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053496945] [2023-02-18 08:25:44,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:25:44,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 08:25:44,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:44,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 08:25:44,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-18 08:25:44,183 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 08:25:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:44,225 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-18 08:25:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 08:25:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-02-18 08:25:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:44,227 INFO L225 Difference]: With dead ends: 38 [2023-02-18 08:25:44,227 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 08:25:44,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-18 08:25:44,231 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:44,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:25:44,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 08:25:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-18 08:25:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 08:25:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-18 08:25:44,244 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-18 08:25:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:44,245 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-18 08:25:44,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 08:25:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-18 08:25:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 08:25:44,246 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:44,246 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:44,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:44,451 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,SelfDestructingSolverStorable7 [2023-02-18 08:25:44,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:44,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:44,452 INFO L85 PathProgramCache]: Analyzing trace with hash 255701234, now seen corresponding path program 1 times [2023-02-18 08:25:44,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:44,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908179080] [2023-02-18 08:25:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 08:25:44,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:44,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908179080] [2023-02-18 08:25:44,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908179080] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:44,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234513244] [2023-02-18 08:25:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:44,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:44,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:44,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:44,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 08:25:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:44,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 08:25:44,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 08:25:44,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 08:25:44,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234513244] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:44,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:44,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-02-18 08:25:44,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730893117] [2023-02-18 08:25:44,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:44,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 08:25:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:44,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 08:25:44,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-18 08:25:44,723 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 08:25:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:44,907 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-02-18 08:25:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 08:25:44,908 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2023-02-18 08:25:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:44,910 INFO L225 Difference]: With dead ends: 128 [2023-02-18 08:25:44,910 INFO L226 Difference]: Without dead ends: 91 [2023-02-18 08:25:44,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2023-02-18 08:25:44,911 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:44,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 139 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:25:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-18 08:25:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-02-18 08:25:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 08:25:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-02-18 08:25:44,921 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-02-18 08:25:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:44,921 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-02-18 08:25:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 08:25:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-02-18 08:25:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-18 08:25:44,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:44,924 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:44,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:45,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:45,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:45,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1292177225, now seen corresponding path program 2 times [2023-02-18 08:25:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:45,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246645523] [2023-02-18 08:25:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-18 08:25:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:45,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246645523] [2023-02-18 08:25:45,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246645523] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:45,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547161268] [2023-02-18 08:25:45,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:25:45,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:45,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:45,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:45,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 08:25:45,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:25:45,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:25:45,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 08:25:45,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-18 08:25:45,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-18 08:25:46,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547161268] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:46,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:46,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 21 [2023-02-18 08:25:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948588213] [2023-02-18 08:25:46,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:46,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 08:25:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 08:25:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-02-18 08:25:46,020 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 08:25:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:46,230 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-02-18 08:25:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 08:25:46,231 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2023-02-18 08:25:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:46,233 INFO L225 Difference]: With dead ends: 145 [2023-02-18 08:25:46,233 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 08:25:46,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 144 SyntacticMatches, 25 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 08:25:46,237 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 27 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:46,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 239 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:25:46,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 08:25:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-18 08:25:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 08:25:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-02-18 08:25:46,260 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 82 [2023-02-18 08:25:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:46,261 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-02-18 08:25:46,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 08:25:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-02-18 08:25:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-18 08:25:46,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:46,265 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:46,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:46,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:46,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:46,471 INFO L85 PathProgramCache]: Analyzing trace with hash -375510631, now seen corresponding path program 3 times [2023-02-18 08:25:46,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:46,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836141217] [2023-02-18 08:25:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:46,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:25:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-18 08:25:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836141217] [2023-02-18 08:25:46,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836141217] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:46,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851182970] [2023-02-18 08:25:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:25:46,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:46,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:46,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:46,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 08:25:46,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 08:25:46,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:25:46,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 08:25:46,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-18 08:25:47,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-18 08:25:47,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851182970] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:47,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:47,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-02-18 08:25:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941917864] [2023-02-18 08:25:47,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:47,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 08:25:47,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:47,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 08:25:47,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-02-18 08:25:47,197 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 08:25:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:47,522 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-02-18 08:25:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-18 08:25:47,523 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 98 [2023-02-18 08:25:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:47,524 INFO L225 Difference]: With dead ends: 154 [2023-02-18 08:25:47,524 INFO L226 Difference]: Without dead ends: 133 [2023-02-18 08:25:47,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-02-18 08:25:47,527 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:47,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 162 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:25:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-18 08:25:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-02-18 08:25:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 117 states have internal predecessors, (130), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-18 08:25:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-18 08:25:47,535 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 98 [2023-02-18 08:25:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:47,536 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-18 08:25:47,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 27 states have internal predecessors, (79), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-18 08:25:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-18 08:25:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-02-18 08:25:47,537 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:47,537 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:47,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 08:25:47,742 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,SelfDestructingSolverStorable10 [2023-02-18 08:25:47,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1162975598, now seen corresponding path program 4 times [2023-02-18 08:25:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:47,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818253442] [2023-02-18 08:25:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:47,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:25:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-02-18 08:25:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:48,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818253442] [2023-02-18 08:25:48,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818253442] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:48,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860224332] [2023-02-18 08:25:48,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:25:48,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:48,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:48,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:48,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 08:25:48,487 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:25:48,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:25:48,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 08:25:48,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 228 proven. 235 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-18 08:25:48,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 228 proven. 235 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-18 08:25:48,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860224332] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:48,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:48,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 41 [2023-02-18 08:25:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839230981] [2023-02-18 08:25:48,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:48,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-18 08:25:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-18 08:25:48,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1442, Unknown=0, NotChecked=0, Total=1722 [2023-02-18 08:25:48,845 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:25:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:49,750 INFO L93 Difference]: Finished difference Result 292 states and 329 transitions. [2023-02-18 08:25:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-18 08:25:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 133 [2023-02-18 08:25:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:49,753 INFO L225 Difference]: With dead ends: 292 [2023-02-18 08:25:49,753 INFO L226 Difference]: Without dead ends: 216 [2023-02-18 08:25:49,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2872, Invalid=9560, Unknown=0, NotChecked=0, Total=12432 [2023-02-18 08:25:49,759 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 251 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:49,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 233 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:25:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-18 08:25:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2023-02-18 08:25:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 186 states have (on average 1.1344086021505377) internal successors, (211), 186 states have internal predecessors, (211), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-18 08:25:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 224 transitions. [2023-02-18 08:25:49,772 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 224 transitions. Word has length 133 [2023-02-18 08:25:49,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:49,772 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 224 transitions. [2023-02-18 08:25:49,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:25:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 224 transitions. [2023-02-18 08:25:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-02-18 08:25:49,774 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:49,774 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:49,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:49,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1027834391, now seen corresponding path program 5 times [2023-02-18 08:25:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059156956] [2023-02-18 08:25:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:49,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1379 proven. 180 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-02-18 08:25:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059156956] [2023-02-18 08:25:51,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059156956] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:51,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006454284] [2023-02-18 08:25:51,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:25:51,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:51,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:51,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:51,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 08:25:51,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-02-18 08:25:51,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:25:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 08:25:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1372 proven. 185 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-02-18 08:25:52,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1385 proven. 172 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-02-18 08:25:52,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006454284] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:52,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:52,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 24] total 32 [2023-02-18 08:25:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954253176] [2023-02-18 08:25:52,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:52,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 08:25:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 08:25:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2023-02-18 08:25:52,566 INFO L87 Difference]: Start difference. First operand 199 states and 224 transitions. Second operand has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 08:25:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:53,154 INFO L93 Difference]: Finished difference Result 349 states and 396 transitions. [2023-02-18 08:25:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-18 08:25:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 210 [2023-02-18 08:25:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:53,156 INFO L225 Difference]: With dead ends: 349 [2023-02-18 08:25:53,156 INFO L226 Difference]: Without dead ends: 204 [2023-02-18 08:25:53,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 400 SyntacticMatches, 40 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=547, Invalid=2993, Unknown=0, NotChecked=0, Total=3540 [2023-02-18 08:25:53,158 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:53,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 415 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 08:25:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-18 08:25:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-02-18 08:25:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 189 states have (on average 1.08994708994709) internal successors, (206), 189 states have internal predecessors, (206), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-18 08:25:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 219 transitions. [2023-02-18 08:25:53,168 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 219 transitions. Word has length 210 [2023-02-18 08:25:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:53,168 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 219 transitions. [2023-02-18 08:25:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 08:25:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 219 transitions. [2023-02-18 08:25:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-02-18 08:25:53,171 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:53,171 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:53,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:53,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:53,377 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:53,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1662975466, now seen corresponding path program 6 times [2023-02-18 08:25:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:53,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379290073] [2023-02-18 08:25:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:25:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1219 proven. 781 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2023-02-18 08:25:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:55,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379290073] [2023-02-18 08:25:55,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379290073] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127731064] [2023-02-18 08:25:55,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:25:55,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:55,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:55,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:55,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 08:25:55,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-02-18 08:25:55,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:25:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 08:25:55,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:25:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 718 proven. 70 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-18 08:25:55,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:25:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 718 proven. 70 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-18 08:25:56,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127731064] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:25:56,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:25:56,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 17, 17] total 68 [2023-02-18 08:25:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835110586] [2023-02-18 08:25:56,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:25:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-02-18 08:25:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:25:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-02-18 08:25:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=3910, Unknown=0, NotChecked=0, Total=4556 [2023-02-18 08:25:56,007 INFO L87 Difference]: Start difference. First operand 202 states and 219 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:25:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:25:57,137 INFO L93 Difference]: Finished difference Result 520 states and 590 transitions. [2023-02-18 08:25:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-18 08:25:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 213 [2023-02-18 08:25:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:25:57,140 INFO L225 Difference]: With dead ends: 520 [2023-02-18 08:25:57,140 INFO L226 Difference]: Without dead ends: 338 [2023-02-18 08:25:57,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5966 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4000, Invalid=14632, Unknown=0, NotChecked=0, Total=18632 [2023-02-18 08:25:57,146 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 554 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 08:25:57,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 268 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 08:25:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-02-18 08:25:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2023-02-18 08:25:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 260 states have (on average 1.0807692307692307) internal successors, (281), 260 states have internal predecessors, (281), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-18 08:25:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 295 transitions. [2023-02-18 08:25:57,163 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 295 transitions. Word has length 213 [2023-02-18 08:25:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:25:57,163 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 295 transitions. [2023-02-18 08:25:57,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:25:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 295 transitions. [2023-02-18 08:25:57,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-02-18 08:25:57,166 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:25:57,166 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-18 08:25:57,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 08:25:57,372 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,SelfDestructingSolverStorable13 [2023-02-18 08:25:57,372 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:25:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:25:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash 87007117, now seen corresponding path program 7 times [2023-02-18 08:25:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:25:57,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324671833] [2023-02-18 08:25:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:25:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:25:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:25:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:58,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:25:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3094 proven. 823 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-18 08:25:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:25:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324671833] [2023-02-18 08:25:59,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324671833] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:25:59,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839918690] [2023-02-18 08:25:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:25:59,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:25:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:25:59,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:25:59,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 08:25:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:25:59,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-18 08:25:59,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3167 proven. 750 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-18 08:26:00,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3167 proven. 750 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-18 08:26:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839918690] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:01,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:01,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2023-02-18 08:26:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302818686] [2023-02-18 08:26:01,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-18 08:26:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-18 08:26:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1829, Unknown=0, NotChecked=0, Total=2070 [2023-02-18 08:26:01,046 INFO L87 Difference]: Start difference. First operand 274 states and 295 transitions. Second operand has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-18 08:26:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:02,405 INFO L93 Difference]: Finished difference Result 458 states and 500 transitions. [2023-02-18 08:26:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-18 08:26:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 276 [2023-02-18 08:26:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:02,407 INFO L225 Difference]: With dead ends: 458 [2023-02-18 08:26:02,408 INFO L226 Difference]: Without dead ends: 277 [2023-02-18 08:26:02,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 492 SyntacticMatches, 78 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4049 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1887, Invalid=9033, Unknown=0, NotChecked=0, Total=10920 [2023-02-18 08:26:02,413 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 36 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:02,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 434 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 08:26:02,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-02-18 08:26:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-02-18 08:26:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 263 states have (on average 1.049429657794677) internal successors, (276), 263 states have internal predecessors, (276), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-18 08:26:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 290 transitions. [2023-02-18 08:26:02,429 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 290 transitions. Word has length 276 [2023-02-18 08:26:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:02,430 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 290 transitions. [2023-02-18 08:26:02,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-18 08:26:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 290 transitions. [2023-02-18 08:26:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-02-18 08:26:02,434 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:02,434 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:02,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 08:26:02,639 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,SelfDestructingSolverStorable14 [2023-02-18 08:26:02,639 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1463903246, now seen corresponding path program 8 times [2023-02-18 08:26:02,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:02,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388784863] [2023-02-18 08:26:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:26:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 1638 proven. 2172 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-02-18 08:26:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388784863] [2023-02-18 08:26:03,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388784863] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817182447] [2023-02-18 08:26:03,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:26:03,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:03,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:03,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 08:26:04,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:26:04,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:26:04,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 08:26:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 3987 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-02-18 08:26:04,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 3987 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-02-18 08:26:05,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817182447] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:05,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:05,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31, 31] total 73 [2023-02-18 08:26:05,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279313538] [2023-02-18 08:26:05,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-02-18 08:26:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-02-18 08:26:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=4644, Unknown=0, NotChecked=0, Total=5402 [2023-02-18 08:26:05,155 INFO L87 Difference]: Start difference. First operand 277 states and 290 transitions. Second operand has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:26:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:09,053 INFO L93 Difference]: Finished difference Result 1402 states and 1535 transitions. [2023-02-18 08:26:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-02-18 08:26:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 279 [2023-02-18 08:26:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:09,057 INFO L225 Difference]: With dead ends: 1402 [2023-02-18 08:26:09,057 INFO L226 Difference]: Without dead ends: 862 [2023-02-18 08:26:09,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 526 SyntacticMatches, 4 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39079 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=14322, Invalid=67760, Unknown=0, NotChecked=0, Total=82082 [2023-02-18 08:26:09,065 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 561 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:09,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 231 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 08:26:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-02-18 08:26:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 607. [2023-02-18 08:26:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 582 states have (on average 1.041237113402062) internal successors, (606), 582 states have internal predecessors, (606), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-02-18 08:26:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 631 transitions. [2023-02-18 08:26:09,097 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 631 transitions. Word has length 279 [2023-02-18 08:26:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:09,097 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 631 transitions. [2023-02-18 08:26:09,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:26:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 631 transitions. [2023-02-18 08:26:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-02-18 08:26:09,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:09,109 INFO L195 NwaCegarLoop]: trace histogram [139, 139, 139, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:09,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 08:26:09,314 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,SelfDestructingSolverStorable15 [2023-02-18 08:26:09,315 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 790364249, now seen corresponding path program 9 times [2023-02-18 08:26:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:09,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377457795] [2023-02-18 08:26:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:26:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 12034 proven. 336 refuted. 0 times theorem prover too weak. 21893 trivial. 0 not checked. [2023-02-18 08:26:13,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:13,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377457795] [2023-02-18 08:26:13,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377457795] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:13,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780323939] [2023-02-18 08:26:13,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:26:13,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:13,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:13,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:13,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 08:26:13,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-18 08:26:13,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:26:13,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 08:26:13,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 8847 proven. 478 refuted. 0 times theorem prover too weak. 24938 trivial. 0 not checked. [2023-02-18 08:26:14,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:14,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 8847 proven. 478 refuted. 0 times theorem prover too weak. 24938 trivial. 0 not checked. [2023-02-18 08:26:14,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780323939] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:14,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:14,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 79 [2023-02-18 08:26:14,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216883955] [2023-02-18 08:26:14,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:14,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-02-18 08:26:14,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:14,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-02-18 08:26:14,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=5439, Unknown=0, NotChecked=0, Total=6162 [2023-02-18 08:26:14,828 INFO L87 Difference]: Start difference. First operand 607 states and 631 transitions. Second operand has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 08:26:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:18,096 INFO L93 Difference]: Finished difference Result 2253 states and 2543 transitions. [2023-02-18 08:26:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-02-18 08:26:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 664 [2023-02-18 08:26:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:18,110 INFO L225 Difference]: With dead ends: 2253 [2023-02-18 08:26:18,110 INFO L226 Difference]: Without dead ends: 1763 [2023-02-18 08:26:18,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11791 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5766, Invalid=37290, Unknown=0, NotChecked=0, Total=43056 [2023-02-18 08:26:18,117 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1029 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:18,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 688 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 08:26:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2023-02-18 08:26:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 687. [2023-02-18 08:26:18,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 661 states have (on average 1.0514372163388805) internal successors, (695), 661 states have internal predecessors, (695), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-18 08:26:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 721 transitions. [2023-02-18 08:26:18,168 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 721 transitions. Word has length 664 [2023-02-18 08:26:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:18,170 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 721 transitions. [2023-02-18 08:26:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-18 08:26:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 721 transitions. [2023-02-18 08:26:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-02-18 08:26:18,186 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:18,186 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 160, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:18,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 08:26:18,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 08:26:18,394 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash 753281782, now seen corresponding path program 10 times [2023-02-18 08:26:18,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:18,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985682597] [2023-02-18 08:26:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:26:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:21,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 20562 proven. 420 refuted. 0 times theorem prover too weak. 23109 trivial. 0 not checked. [2023-02-18 08:26:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:22,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985682597] [2023-02-18 08:26:22,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985682597] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:22,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291025367] [2023-02-18 08:26:22,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:26:22,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:22,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:22,697 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:22,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 08:26:23,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:26:23,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:26:23,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 08:26:23,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 22609 proven. 404 refuted. 0 times theorem prover too weak. 21078 trivial. 0 not checked. [2023-02-18 08:26:23,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 22634 proven. 379 refuted. 0 times theorem prover too weak. 21078 trivial. 0 not checked. [2023-02-18 08:26:24,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291025367] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:24,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:24,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2023-02-18 08:26:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354943836] [2023-02-18 08:26:24,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:24,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-02-18 08:26:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-02-18 08:26:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2023-02-18 08:26:24,629 INFO L87 Difference]: Start difference. First operand 687 states and 721 transitions. Second operand has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 08:26:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:25,565 INFO L93 Difference]: Finished difference Result 1310 states and 1387 transitions. [2023-02-18 08:26:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-18 08:26:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 727 [2023-02-18 08:26:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:25,569 INFO L225 Difference]: With dead ends: 1310 [2023-02-18 08:26:25,569 INFO L226 Difference]: Without dead ends: 808 [2023-02-18 08:26:25,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1428 SyntacticMatches, 50 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1742, Invalid=7960, Unknown=0, NotChecked=0, Total=9702 [2023-02-18 08:26:25,573 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 150 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:25,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 627 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 08:26:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-02-18 08:26:25,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 758. [2023-02-18 08:26:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 730 states have (on average 1.0465753424657533) internal successors, (764), 730 states have internal predecessors, (764), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-18 08:26:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 792 transitions. [2023-02-18 08:26:25,626 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 792 transitions. Word has length 727 [2023-02-18 08:26:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:25,627 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 792 transitions. [2023-02-18 08:26:25,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 08:26:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 792 transitions. [2023-02-18 08:26:25,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-02-18 08:26:25,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:25,634 INFO L195 NwaCegarLoop]: trace histogram [169, 169, 169, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:25,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 08:26:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 08:26:25,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 888670905, now seen corresponding path program 11 times [2023-02-18 08:26:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:25,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032833222] [2023-02-18 08:26:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:26:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:29,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 22636 proven. 513 refuted. 0 times theorem prover too weak. 25340 trivial. 0 not checked. [2023-02-18 08:26:30,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:30,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032833222] [2023-02-18 08:26:30,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032833222] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:30,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711306960] [2023-02-18 08:26:30,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:26:30,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:30,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:30,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:30,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 08:26:30,849 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-02-18 08:26:30,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:26:30,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 08:26:30,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 27198 proven. 2024 refuted. 0 times theorem prover too weak. 19267 trivial. 0 not checked. [2023-02-18 08:26:31,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 27782 proven. 1440 refuted. 0 times theorem prover too weak. 19267 trivial. 0 not checked. [2023-02-18 08:26:34,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711306960] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:34,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:34,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 49, 49] total 72 [2023-02-18 08:26:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841781918] [2023-02-18 08:26:34,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-18 08:26:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-18 08:26:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=4539, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 08:26:34,274 INFO L87 Difference]: Start difference. First operand 758 states and 792 transitions. Second operand has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 08:26:37,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:37,124 INFO L93 Difference]: Finished difference Result 1481 states and 1557 transitions. [2023-02-18 08:26:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-02-18 08:26:37,125 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 744 [2023-02-18 08:26:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:37,129 INFO L225 Difference]: With dead ends: 1481 [2023-02-18 08:26:37,129 INFO L226 Difference]: Without dead ends: 949 [2023-02-18 08:26:37,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1443 SyntacticMatches, 63 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10796 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5039, Invalid=27181, Unknown=0, NotChecked=0, Total=32220 [2023-02-18 08:26:37,137 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 167 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 3902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:37,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 740 Invalid, 3902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 08:26:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-02-18 08:26:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 865. [2023-02-18 08:26:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 834 states have (on average 1.0419664268585132) internal successors, (869), 834 states have internal predecessors, (869), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2023-02-18 08:26:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 900 transitions. [2023-02-18 08:26:37,203 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 900 transitions. Word has length 744 [2023-02-18 08:26:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:37,204 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 900 transitions. [2023-02-18 08:26:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 08:26:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 900 transitions. [2023-02-18 08:26:37,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-02-18 08:26:37,212 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:37,212 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:37,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 08:26:37,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:37,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 95625241, now seen corresponding path program 12 times [2023-02-18 08:26:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:37,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601103172] [2023-02-18 08:26:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:26:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 24625 proven. 615 refuted. 0 times theorem prover too weak. 27776 trivial. 0 not checked. [2023-02-18 08:26:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:42,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601103172] [2023-02-18 08:26:42,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601103172] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:42,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162776997] [2023-02-18 08:26:42,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:26:42,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:42,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:42,453 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:42,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 08:26:43,187 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2023-02-18 08:26:43,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:26:43,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 08:26:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:26:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 19302 proven. 2267 refuted. 0 times theorem prover too weak. 31447 trivial. 0 not checked. [2023-02-18 08:26:43,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:26:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 19302 proven. 2267 refuted. 0 times theorem prover too weak. 31447 trivial. 0 not checked. [2023-02-18 08:26:45,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162776997] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:26:45,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:26:45,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 31, 31] total 109 [2023-02-18 08:26:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098761595] [2023-02-18 08:26:45,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:26:45,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-02-18 08:26:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:26:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-02-18 08:26:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=10512, Unknown=0, NotChecked=0, Total=11772 [2023-02-18 08:26:45,220 INFO L87 Difference]: Start difference. First operand 865 states and 900 transitions. Second operand has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 08:26:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:26:52,859 INFO L93 Difference]: Finished difference Result 4298 states and 4819 transitions. [2023-02-18 08:26:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-02-18 08:26:52,860 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 778 [2023-02-18 08:26:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:26:52,875 INFO L225 Difference]: With dead ends: 4298 [2023-02-18 08:26:52,876 INFO L226 Difference]: Without dead ends: 3588 [2023-02-18 08:26:52,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1896 GetRequests, 1541 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40022 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=15011, Invalid=112081, Unknown=0, NotChecked=0, Total=127092 [2023-02-18 08:26:52,900 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1513 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 08:26:52,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 809 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 08:26:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2023-02-18 08:26:53,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 1101. [2023-02-18 08:26:53,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1066 states have (on average 1.0562851782363978) internal successors, (1126), 1066 states have internal predecessors, (1126), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 32 states have call predecessors, (32), 2 states have call successors, (32) [2023-02-18 08:26:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1161 transitions. [2023-02-18 08:26:53,046 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1161 transitions. Word has length 778 [2023-02-18 08:26:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:26:53,047 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1161 transitions. [2023-02-18 08:26:53,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-18 08:26:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1161 transitions. [2023-02-18 08:26:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2023-02-18 08:26:53,056 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:26:53,056 INFO L195 NwaCegarLoop]: trace histogram [207, 207, 207, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:26:53,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-18 08:26:53,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:53,268 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:26:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:26:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1747326729, now seen corresponding path program 13 times [2023-02-18 08:26:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:26:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917856576] [2023-02-18 08:26:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:26:53,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:26:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:26:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:26:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:26:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 39660 proven. 726 refuted. 0 times theorem prover too weak. 30276 trivial. 0 not checked. [2023-02-18 08:26:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:26:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917856576] [2023-02-18 08:26:59,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917856576] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:26:59,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579971646] [2023-02-18 08:26:59,915 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:26:59,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:26:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:26:59,916 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:26:59,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 08:27:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:00,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 08:27:00,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:27:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 44052 proven. 3265 refuted. 0 times theorem prover too weak. 23345 trivial. 0 not checked. [2023-02-18 08:27:01,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:27:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 44052 proven. 3265 refuted. 0 times theorem prover too weak. 23345 trivial. 0 not checked. [2023-02-18 08:27:07,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579971646] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:27:07,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:27:07,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-02-18 08:27:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710822022] [2023-02-18 08:27:07,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:27:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-18 08:27:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:27:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-18 08:27:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-02-18 08:27:07,370 INFO L87 Difference]: Start difference. First operand 1101 states and 1161 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 08:27:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:27:14,309 INFO L93 Difference]: Finished difference Result 2144 states and 2266 transitions. [2023-02-18 08:27:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-02-18 08:27:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 858 [2023-02-18 08:27:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:27:14,315 INFO L225 Difference]: With dead ends: 2144 [2023-02-18 08:27:14,315 INFO L226 Difference]: Without dead ends: 1465 [2023-02-18 08:27:14,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2018 GetRequests, 1630 SyntacticMatches, 92 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34510 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-02-18 08:27:14,324 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 161 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 7443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 7460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:27:14,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 771 Invalid, 7460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 7443 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-18 08:27:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-02-18 08:27:14,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1295. [2023-02-18 08:27:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1255 states have (on average 1.049402390438247) internal successors, (1317), 1255 states have internal predecessors, (1317), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 37 states have call predecessors, (37), 2 states have call successors, (37) [2023-02-18 08:27:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1357 transitions. [2023-02-18 08:27:14,482 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1357 transitions. Word has length 858 [2023-02-18 08:27:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:27:14,483 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1357 transitions. [2023-02-18 08:27:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 08:27:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1357 transitions. [2023-02-18 08:27:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-02-18 08:27:14,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:27:14,493 INFO L195 NwaCegarLoop]: trace histogram [212, 212, 212, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:27:14,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 08:27:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:27:14,704 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:27:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:27:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -404731690, now seen corresponding path program 14 times [2023-02-18 08:27:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:27:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909551075] [2023-02-18 08:27:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:27:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:27:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:27:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:21,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 41697 proven. 846 refuted. 0 times theorem prover too weak. 31359 trivial. 0 not checked. [2023-02-18 08:27:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:27:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909551075] [2023-02-18 08:27:22,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909551075] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:27:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064908314] [2023-02-18 08:27:22,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:27:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:27:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:27:22,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:27:22,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 08:27:23,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:27:23,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:27:23,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-18 08:27:23,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:27:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 49460 proven. 4083 refuted. 0 times theorem prover too weak. 20359 trivial. 0 not checked. [2023-02-18 08:27:24,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:27:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 49460 proven. 4083 refuted. 0 times theorem prover too weak. 20359 trivial. 0 not checked. [2023-02-18 08:27:30,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064908314] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:27:30,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:27:30,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 73, 73] total 100 [2023-02-18 08:27:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854631420] [2023-02-18 08:27:30,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:27:30,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-18 08:27:30,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:27:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-18 08:27:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=9055, Unknown=0, NotChecked=0, Total=9900 [2023-02-18 08:27:30,466 INFO L87 Difference]: Start difference. First operand 1295 states and 1357 transitions. Second operand has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-02-18 08:27:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:27:38,992 INFO L93 Difference]: Finished difference Result 2471 states and 2593 transitions. [2023-02-18 08:27:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-02-18 08:27:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 873 [2023-02-18 08:27:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:27:39,000 INFO L225 Difference]: With dead ends: 2471 [2023-02-18 08:27:39,001 INFO L226 Difference]: Without dead ends: 1765 [2023-02-18 08:27:39,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 1650 SyntacticMatches, 99 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43329 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=13613, Invalid=98277, Unknown=0, NotChecked=0, Total=111890 [2023-02-18 08:27:39,020 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 169 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 7861 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 7880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-18 08:27:39,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 822 Invalid, 7880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7861 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-18 08:27:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2023-02-18 08:27:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1543. [2023-02-18 08:27:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1497 states have (on average 1.0434201736806947) internal successors, (1562), 1497 states have internal predecessors, (1562), 3 states have call successors, (3), 2 states have call predecessors, (3), 42 states have return successors, (43), 43 states have call predecessors, (43), 2 states have call successors, (43) [2023-02-18 08:27:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1608 transitions. [2023-02-18 08:27:39,239 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1608 transitions. Word has length 873 [2023-02-18 08:27:39,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:27:39,240 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1608 transitions. [2023-02-18 08:27:39,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-02-18 08:27:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1608 transitions. [2023-02-18 08:27:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-02-18 08:27:39,252 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:27:39,252 INFO L195 NwaCegarLoop]: trace histogram [216, 216, 216, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:27:39,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 08:27:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-18 08:27:39,465 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:27:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:27:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1697460042, now seen corresponding path program 15 times [2023-02-18 08:27:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:27:39,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499776756] [2023-02-18 08:27:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:27:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:27:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:27:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:44,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:27:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:27:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 43477 proven. 975 refuted. 0 times theorem prover too weak. 32096 trivial. 0 not checked. [2023-02-18 08:27:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:27:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499776756] [2023-02-18 08:27:47,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499776756] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:27:47,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499530880] [2023-02-18 08:27:47,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:27:47,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:27:47,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:27:47,149 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:27:47,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 08:27:49,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-02-18 08:27:49,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:27:49,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-18 08:27:49,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:27:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 35426 proven. 8222 refuted. 0 times theorem prover too weak. 32900 trivial. 0 not checked. [2023-02-18 08:27:50,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:27:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 35426 proven. 8222 refuted. 0 times theorem prover too weak. 32900 trivial. 0 not checked. [2023-02-18 08:27:52,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499530880] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:27:52,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:27:52,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 40, 40] total 139 [2023-02-18 08:27:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15444447] [2023-02-18 08:27:52,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:27:52,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-02-18 08:27:52,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:27:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-02-18 08:27:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1947, Invalid=17235, Unknown=0, NotChecked=0, Total=19182 [2023-02-18 08:27:52,580 INFO L87 Difference]: Start difference. First operand 1543 states and 1608 transitions. Second operand has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:28:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:28:08,483 INFO L93 Difference]: Finished difference Result 7396 states and 8171 transitions. [2023-02-18 08:28:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 409 states. [2023-02-18 08:28:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 885 [2023-02-18 08:28:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:28:08,507 INFO L225 Difference]: With dead ends: 7396 [2023-02-18 08:28:08,507 INFO L226 Difference]: Without dead ends: 6388 [2023-02-18 08:28:08,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2278 GetRequests, 1738 SyntacticMatches, 0 SemanticMatches, 540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100389 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=31240, Invalid=261982, Unknown=0, NotChecked=0, Total=293222 [2023-02-18 08:28:08,546 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3771 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 08:28:08,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 1216 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 08:28:08,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2023-02-18 08:28:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 2008. [2023-02-18 08:28:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1955 states have (on average 1.0521739130434782) internal successors, (2057), 1955 states have internal predecessors, (2057), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2023-02-18 08:28:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2110 transitions. [2023-02-18 08:28:08,974 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2110 transitions. Word has length 885 [2023-02-18 08:28:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:28:08,975 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 2110 transitions. [2023-02-18 08:28:08,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-18 08:28:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2110 transitions. [2023-02-18 08:28:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-02-18 08:28:08,988 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:28:08,989 INFO L195 NwaCegarLoop]: trace histogram [252, 252, 252, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-18 08:28:09,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 08:28:09,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:28:09,206 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:28:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:28:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1424439126, now seen corresponding path program 16 times [2023-02-18 08:28:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:28:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469350052] [2023-02-18 08:28:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:28:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:28:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:28:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:14,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:21,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:24,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 49943 proven. 17127 refuted. 0 times theorem prover too weak. 35452 trivial. 0 not checked. [2023-02-18 08:28:25,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:28:25,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469350052] [2023-02-18 08:28:25,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469350052] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:28:25,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962915034] [2023-02-18 08:28:25,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:28:25,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:28:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:28:25,101 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:28:25,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 08:28:27,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:28:27,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:28:27,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 65 conjunts are in the unsatisfiable core [2023-02-18 08:28:27,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:28:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 60873 proven. 1079 refuted. 0 times theorem prover too weak. 40570 trivial. 0 not checked. [2023-02-18 08:28:29,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:28:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 60916 proven. 1036 refuted. 0 times theorem prover too weak. 40570 trivial. 0 not checked. [2023-02-18 08:28:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962915034] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:28:34,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:28:34,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 65, 65] total 167 [2023-02-18 08:28:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436235840] [2023-02-18 08:28:34,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:28:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-02-18 08:28:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:28:34,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-02-18 08:28:34,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1899, Invalid=25823, Unknown=0, NotChecked=0, Total=27722 [2023-02-18 08:28:34,017 INFO L87 Difference]: Start difference. First operand 2008 states and 2110 transitions. Second operand has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-18 08:28:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:28:43,377 INFO L93 Difference]: Finished difference Result 2633 states and 2802 transitions. [2023-02-18 08:28:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-02-18 08:28:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 993 [2023-02-18 08:28:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:28:43,381 INFO L225 Difference]: With dead ends: 2633 [2023-02-18 08:28:43,381 INFO L226 Difference]: Without dead ends: 1042 [2023-02-18 08:28:43,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2395 GetRequests, 1909 SyntacticMatches, 34 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79377 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=22213, Invalid=183449, Unknown=0, NotChecked=0, Total=205662 [2023-02-18 08:28:43,415 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1408 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 5104 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 5186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-18 08:28:43,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 972 Invalid, 5186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 5104 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-18 08:28:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-02-18 08:28:43,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2023-02-18 08:28:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1016 states have (on average 1.061023622047244) internal successors, (1078), 1016 states have internal predecessors, (1078), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-18 08:28:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1104 transitions. [2023-02-18 08:28:43,589 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1104 transitions. Word has length 993 [2023-02-18 08:28:43,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:28:43,589 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1104 transitions. [2023-02-18 08:28:43,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-18 08:28:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1104 transitions. [2023-02-18 08:28:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-02-18 08:28:43,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:28:43,601 INFO L195 NwaCegarLoop]: trace histogram [268, 268, 268, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-18 08:28:43,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 08:28:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:28:43,820 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:28:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:28:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash -47892643, now seen corresponding path program 17 times [2023-02-18 08:28:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:28:43,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052044194] [2023-02-18 08:28:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:28:43,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:28:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:28:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:54,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:28:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:28:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:00,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 84782 proven. 7140 refuted. 0 times theorem prover too weak. 24122 trivial. 0 not checked. [2023-02-18 08:29:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:29:03,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052044194] [2023-02-18 08:29:03,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052044194] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:29:03,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556494718] [2023-02-18 08:29:03,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:29:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:29:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:29:03,317 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:29:03,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 08:29:05,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-02-18 08:29:05,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:29:05,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-18 08:29:05,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:29:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 83808 proven. 8087 refuted. 0 times theorem prover too weak. 24149 trivial. 0 not checked. [2023-02-18 08:29:07,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:29:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 84764 proven. 7131 refuted. 0 times theorem prover too weak. 24149 trivial. 0 not checked. [2023-02-18 08:29:12,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556494718] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:29:12,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:29:12,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 82, 82] total 100 [2023-02-18 08:29:12,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334691090] [2023-02-18 08:29:12,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:29:12,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-18 08:29:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:29:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-18 08:29:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=8891, Unknown=0, NotChecked=0, Total=9900 [2023-02-18 08:29:12,526 INFO L87 Difference]: Start difference. First operand 1042 states and 1104 transitions. Second operand has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-18 08:29:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:29:26,981 INFO L93 Difference]: Finished difference Result 1511 states and 1632 transitions. [2023-02-18 08:29:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2023-02-18 08:29:26,981 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 1062 [2023-02-18 08:29:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:29:26,985 INFO L225 Difference]: With dead ends: 1511 [2023-02-18 08:29:26,985 INFO L226 Difference]: Without dead ends: 1045 [2023-02-18 08:29:27,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2571 GetRequests, 2013 SyntacticMatches, 148 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54902 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=30719, Invalid=138613, Unknown=0, NotChecked=0, Total=169332 [2023-02-18 08:29:27,012 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 113 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 5760 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 5760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 08:29:27,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1101 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 5760 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 08:29:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-02-18 08:29:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1045. [2023-02-18 08:29:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1019 states have (on average 1.056918547595682) internal successors, (1077), 1019 states have internal predecessors, (1077), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-18 08:29:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1103 transitions. [2023-02-18 08:29:27,230 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1103 transitions. Word has length 1062 [2023-02-18 08:29:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:29:27,231 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1103 transitions. [2023-02-18 08:29:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-18 08:29:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1103 transitions. [2023-02-18 08:29:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2023-02-18 08:29:27,242 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:29:27,242 INFO L195 NwaCegarLoop]: trace histogram [269, 269, 269, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-18 08:29:27,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 08:29:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:29:27,457 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:29:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:29:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash 599632210, now seen corresponding path program 18 times [2023-02-18 08:29:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:29:27,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326636150] [2023-02-18 08:29:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:29:27,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:29:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:29:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:34,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:37,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:45,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:46,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:29:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:29:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 53446 proven. 44818 refuted. 0 times theorem prover too weak. 18606 trivial. 0 not checked. [2023-02-18 08:29:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:29:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326636150] [2023-02-18 08:29:48,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326636150] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:29:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807766606] [2023-02-18 08:29:48,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:29:48,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:29:48,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:29:48,109 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:29:48,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 08:29:50,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-02-18 08:29:50,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:29:50,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-18 08:29:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:29:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 21792 proven. 1247 refuted. 0 times theorem prover too weak. 93831 trivial. 0 not checked. [2023-02-18 08:29:53,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:29:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 21792 proven. 1247 refuted. 0 times theorem prover too weak. 93831 trivial. 0 not checked. [2023-02-18 08:29:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807766606] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:29:57,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:29:57,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 61, 61] total 215 [2023-02-18 08:29:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637084166] [2023-02-18 08:29:57,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:29:57,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-02-18 08:29:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:29:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-02-18 08:29:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6032, Invalid=39978, Unknown=0, NotChecked=0, Total=46010 [2023-02-18 08:29:57,843 INFO L87 Difference]: Start difference. First operand 1045 states and 1103 transitions. Second operand has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:30:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:30:16,232 INFO L93 Difference]: Finished difference Result 2201 states and 2471 transitions. [2023-02-18 08:30:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 531 states. [2023-02-18 08:30:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 1065 [2023-02-18 08:30:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:30:16,237 INFO L225 Difference]: With dead ends: 2201 [2023-02-18 08:30:16,237 INFO L226 Difference]: Without dead ends: 1617 [2023-02-18 08:30:16,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2718 GetRequests, 2057 SyntacticMatches, 0 SemanticMatches, 661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167801 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=95011, Invalid=343895, Unknown=0, NotChecked=0, Total=438906 [2023-02-18 08:30:16,260 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4061 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 08:30:16,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4061 Valid, 416 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 08:30:16,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-02-18 08:30:16,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1285. [2023-02-18 08:30:16,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1258 states have (on average 1.068362480127186) internal successors, (1344), 1258 states have internal predecessors, (1344), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2023-02-18 08:30:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1371 transitions. [2023-02-18 08:30:16,443 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1371 transitions. Word has length 1065 [2023-02-18 08:30:16,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:30:16,443 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1371 transitions. [2023-02-18 08:30:16,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:30:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1371 transitions. [2023-02-18 08:30:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1221 [2023-02-18 08:30:16,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:30:16,458 INFO L195 NwaCegarLoop]: trace histogram [317, 317, 317, 26, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-02-18 08:30:16,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 08:30:16,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-18 08:30:16,673 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:30:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:30:16,673 INFO L85 PathProgramCache]: Analyzing trace with hash 712770233, now seen corresponding path program 19 times [2023-02-18 08:30:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:30:16,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854254799] [2023-02-18 08:30:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:30:16,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:30:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:30:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:30:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 160617 backedges. 76424 proven. 55157 refuted. 0 times theorem prover too weak. 29036 trivial. 0 not checked. [2023-02-18 08:30:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:30:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854254799] [2023-02-18 08:30:42,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854254799] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:30:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877074984] [2023-02-18 08:30:42,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:30:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:30:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:30:42,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:30:42,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 08:30:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:30:45,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 100 conjunts are in the unsatisfiable core [2023-02-18 08:30:45,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:30:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 160617 backedges. 76424 proven. 55157 refuted. 0 times theorem prover too weak. 29036 trivial. 0 not checked. [2023-02-18 08:30:46,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:30:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 160617 backedges. 76424 proven. 55157 refuted. 0 times theorem prover too weak. 29036 trivial. 0 not checked. [2023-02-18 08:30:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877074984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:30:54,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:30:54,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 103 [2023-02-18 08:30:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538848880] [2023-02-18 08:30:54,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:30:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-02-18 08:30:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:30:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-02-18 08:30:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1174, Invalid=9332, Unknown=0, NotChecked=0, Total=10506 [2023-02-18 08:30:54,244 INFO L87 Difference]: Start difference. First operand 1285 states and 1371 transitions. Second operand has 103 states, 103 states have (on average 2.2524271844660193) internal successors, (232), 82 states have internal predecessors, (232), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-02-18 08:30:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:30:59,364 INFO L93 Difference]: Finished difference Result 2174 states and 2350 transitions. [2023-02-18 08:30:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 442 states. [2023-02-18 08:30:59,364 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.2524271844660193) internal successors, (232), 82 states have internal predecessors, (232), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) Word has length 1220 [2023-02-18 08:30:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:30:59,368 INFO L225 Difference]: With dead ends: 2174 [2023-02-18 08:30:59,368 INFO L226 Difference]: Without dead ends: 1468 [2023-02-18 08:30:59,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2986 GetRequests, 2350 SyntacticMatches, 136 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147806 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=52495, Invalid=199007, Unknown=0, NotChecked=0, Total=251502 [2023-02-18 08:30:59,387 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 780 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 08:30:59,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 300 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 08:30:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-02-18 08:30:59,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1405. [2023-02-18 08:30:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1376 states have (on average 1.0646802325581395) internal successors, (1465), 1376 states have internal predecessors, (1465), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 26 states have call predecessors, (26), 2 states have call successors, (26) [2023-02-18 08:30:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1494 transitions. [2023-02-18 08:30:59,583 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1494 transitions. Word has length 1220 [2023-02-18 08:30:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:30:59,584 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 1494 transitions. [2023-02-18 08:30:59,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.2524271844660193) internal successors, (232), 82 states have internal predecessors, (232), 1 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (22), 22 states have call predecessors, (22), 1 states have call successors, (22) [2023-02-18 08:30:59,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1494 transitions. [2023-02-18 08:30:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2023-02-18 08:30:59,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:30:59,599 INFO L195 NwaCegarLoop]: trace histogram [334, 334, 334, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-18 08:30:59,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-02-18 08:30:59,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-02-18 08:30:59,813 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:30:59,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:30:59,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1412725251, now seen corresponding path program 20 times [2023-02-18 08:30:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:30:59,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906000351] [2023-02-18 08:30:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:30:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:31:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:31:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:09,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:23,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:28,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:31:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:31:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 177933 backedges. 124429 proven. 8487 refuted. 0 times theorem prover too weak. 45017 trivial. 0 not checked. [2023-02-18 08:31:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:31:29,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906000351] [2023-02-18 08:31:29,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906000351] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:31:29,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166454117] [2023-02-18 08:31:29,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:31:29,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:31:29,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:31:29,516 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:31:29,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 08:31:32,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:31:32,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:31:32,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 93 conjunts are in the unsatisfiable core [2023-02-18 08:31:32,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:31:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 177933 backedges. 124211 proven. 8705 refuted. 0 times theorem prover too weak. 45017 trivial. 0 not checked. [2023-02-18 08:31:34,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:31:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 177933 backedges. 124211 proven. 8705 refuted. 0 times theorem prover too weak. 45017 trivial. 0 not checked. [2023-02-18 08:31:44,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166454117] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:31:44,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:31:44,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 98 [2023-02-18 08:31:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990022005] [2023-02-18 08:31:44,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:31:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-18 08:31:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:31:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-18 08:31:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1051, Invalid=8455, Unknown=0, NotChecked=0, Total=9506 [2023-02-18 08:31:44,027 INFO L87 Difference]: Start difference. First operand 1405 states and 1494 transitions. Second operand has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 78 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:31:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:31:55,835 INFO L93 Difference]: Finished difference Result 2054 states and 2227 transitions. [2023-02-18 08:31:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-02-18 08:31:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 78 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 1272 [2023-02-18 08:31:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:31:55,841 INFO L225 Difference]: With dead ends: 2054 [2023-02-18 08:31:55,841 INFO L226 Difference]: Without dead ends: 1348 [2023-02-18 08:31:55,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2996 GetRequests, 2416 SyntacticMatches, 176 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60042 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=33040, Invalid=131390, Unknown=0, NotChecked=0, Total=164430 [2023-02-18 08:31:55,870 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 75 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:31:55,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1308 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2938 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 08:31:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2023-02-18 08:31:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1348. [2023-02-18 08:31:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1320 states have (on average 1.062121212121212) internal successors, (1402), 1320 states have internal predecessors, (1402), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-18 08:31:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1430 transitions. [2023-02-18 08:31:56,115 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1430 transitions. Word has length 1272 [2023-02-18 08:31:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:31:56,116 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1430 transitions. [2023-02-18 08:31:56,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 78 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-18 08:31:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1430 transitions. [2023-02-18 08:31:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1276 [2023-02-18 08:31:56,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:31:56,129 INFO L195 NwaCegarLoop]: trace histogram [335, 335, 335, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-18 08:31:56,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 08:31:56,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-02-18 08:31:56,345 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:31:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:31:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1196523550, now seen corresponding path program 21 times [2023-02-18 08:31:56,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:31:56,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672326072] [2023-02-18 08:31:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:31:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:31:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-18 08:32:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:06,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:32:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:32:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 178959 backedges. 132076 proven. 9994 refuted. 0 times theorem prover too weak. 36889 trivial. 0 not checked. [2023-02-18 08:32:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:32:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672326072] [2023-02-18 08:32:25,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672326072] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:32:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567463579] [2023-02-18 08:32:25,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:32:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:32:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:32:25,565 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:32:25,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 08:32:29,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-02-18 08:32:29,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:32:29,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 08:32:29,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:32:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 178959 backedges. 88628 proven. 32033 refuted. 0 times theorem prover too weak. 58298 trivial. 0 not checked. [2023-02-18 08:32:32,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:32:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 178959 backedges. 88628 proven. 32033 refuted. 0 times theorem prover too weak. 58298 trivial. 0 not checked. [2023-02-18 08:32:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567463579] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:32:35,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:32:35,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 51, 51] total 198 [2023-02-18 08:32:35,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799179446] [2023-02-18 08:32:35,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:32:35,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-02-18 08:32:35,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:32:35,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-02-18 08:32:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3365, Invalid=35641, Unknown=0, NotChecked=0, Total=39006 [2023-02-18 08:32:35,824 INFO L87 Difference]: Start difference. First operand 1348 states and 1430 transitions. Second operand has 198 states, 198 states have (on average 2.080808080808081) internal successors, (412), 170 states have internal predecessors, (412), 1 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (30), 30 states have call predecessors, (30), 1 states have call successors, (30) [2023-02-18 08:33:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:33:48,472 INFO L93 Difference]: Finished difference Result 4457 states and 4956 transitions. [2023-02-18 08:33:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 969 states. [2023-02-18 08:33:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 2.080808080808081) internal successors, (412), 170 states have internal predecessors, (412), 1 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (30), 30 states have call predecessors, (30), 1 states have call successors, (30) Word has length 1275 [2023-02-18 08:33:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:33:48,484 INFO L225 Difference]: With dead ends: 4457 [2023-02-18 08:33:48,485 INFO L226 Difference]: Without dead ends: 3087 [2023-02-18 08:33:48,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3660 GetRequests, 2502 SyntacticMatches, 0 SemanticMatches, 1158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531750 ImplicationChecksByTransitivity, 74.9s TimeCoverageRelationStatistics Valid=190360, Invalid=1154080, Unknown=0, NotChecked=0, Total=1344440 [2023-02-18 08:33:48,560 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 3511 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-18 08:33:48,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 1330 Invalid, 4969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-18 08:33:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2023-02-18 08:33:49,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 1726. [2023-02-18 08:33:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1694 states have (on average 1.0726092089728454) internal successors, (1817), 1694 states have internal predecessors, (1817), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2023-02-18 08:33:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 1849 transitions. [2023-02-18 08:33:49,003 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 1849 transitions. Word has length 1275 [2023-02-18 08:33:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:33:49,004 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 1849 transitions. [2023-02-18 08:33:49,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 2.080808080808081) internal successors, (412), 170 states have internal predecessors, (412), 1 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (30), 30 states have call predecessors, (30), 1 states have call successors, (30) [2023-02-18 08:33:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 1849 transitions. [2023-02-18 08:33:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2023-02-18 08:33:49,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:33:49,025 INFO L195 NwaCegarLoop]: trace histogram [454, 454, 454, 31, 30, 30, 30, 30, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1] [2023-02-18 08:33:49,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-02-18 08:33:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:33:49,226 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:33:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:33:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1507019603, now seen corresponding path program 22 times [2023-02-18 08:33:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:33:49,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500640965] [2023-02-18 08:33:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:33:49,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:33:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:33:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:33:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:09,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:17,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:17,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:17,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:34:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:34:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 325708 backedges. 185724 proven. 1761 refuted. 0 times theorem prover too weak. 138223 trivial. 0 not checked. [2023-02-18 08:34:18,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:34:18,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500640965] [2023-02-18 08:34:18,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500640965] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:34:18,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510318843] [2023-02-18 08:34:18,459 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:34:18,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:34:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:34:18,461 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:34:18,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 08:34:22,916 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:34:22,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:34:22,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 3854 conjuncts, 153 conjunts are in the unsatisfiable core [2023-02-18 08:34:22,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:34:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 325708 backedges. 191979 proven. 6326 refuted. 0 times theorem prover too weak. 127403 trivial. 0 not checked. [2023-02-18 08:34:27,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:34:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 325708 backedges. 192088 proven. 6217 refuted. 0 times theorem prover too weak. 127403 trivial. 0 not checked. [2023-02-18 08:34:47,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510318843] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:34:47,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:34:47,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 153, 153] total 231 [2023-02-18 08:34:47,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297916324] [2023-02-18 08:34:47,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:34:47,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 231 states [2023-02-18 08:34:47,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:34:47,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2023-02-18 08:34:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5869, Invalid=47261, Unknown=0, NotChecked=0, Total=53130 [2023-02-18 08:34:47,588 INFO L87 Difference]: Start difference. First operand 1726 states and 1849 transitions. Second operand has 231 states, 231 states have (on average 1.6277056277056277) internal successors, (376), 229 states have internal predecessors, (376), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 08:35:01,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:35:01,575 INFO L93 Difference]: Finished difference Result 3401 states and 3759 transitions. [2023-02-18 08:35:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2023-02-18 08:35:01,576 INFO L78 Accepts]: Start accepts. Automaton has has 231 states, 231 states have (on average 1.6277056277056277) internal successors, (376), 229 states have internal predecessors, (376), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1686 [2023-02-18 08:35:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:35:01,582 INFO L225 Difference]: With dead ends: 3401 [2023-02-18 08:35:01,582 INFO L226 Difference]: Without dead ends: 2440 [2023-02-18 08:35:01,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3738 GetRequests, 3149 SyntacticMatches, 135 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76412 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=31924, Invalid=175556, Unknown=0, NotChecked=0, Total=207480 [2023-02-18 08:35:01,596 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 529 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 10204 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 10220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 10204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:35:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2291 Invalid, 10220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 10204 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-18 08:35:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2023-02-18 08:35:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2248. [2023-02-18 08:35:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2213 states have (on average 1.0451875282422052) internal successors, (2313), 2213 states have internal predecessors, (2313), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 32 states have call predecessors, (32), 2 states have call successors, (32) [2023-02-18 08:35:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2348 transitions. [2023-02-18 08:35:02,398 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2348 transitions. Word has length 1686 [2023-02-18 08:35:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:35:02,399 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 2348 transitions. [2023-02-18 08:35:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 231 states, 231 states have (on average 1.6277056277056277) internal successors, (376), 229 states have internal predecessors, (376), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 08:35:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2348 transitions. [2023-02-18 08:35:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2023-02-18 08:35:02,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:35:02,420 INFO L195 NwaCegarLoop]: trace histogram [460, 460, 460, 31, 30, 30, 30, 30, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1] [2023-02-18 08:35:02,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-02-18 08:35:02,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:35:02,621 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:35:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:35:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash 818163789, now seen corresponding path program 23 times [2023-02-18 08:35:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:35:02,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600990702] [2023-02-18 08:35:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:35:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:35:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:09,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:35:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:35:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:35:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 334093 backedges. 191397 proven. 1938 refuted. 0 times theorem prover too weak. 140758 trivial. 0 not checked. [2023-02-18 08:35:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:35:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600990702] [2023-02-18 08:35:32,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600990702] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:35:32,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373924254] [2023-02-18 08:35:32,732 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:35:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:35:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:35:32,734 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:35:32,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-02-18 08:35:37,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2023-02-18 08:35:37,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:35:37,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 3599 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-18 08:35:37,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:35:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 334093 backedges. 229998 proven. 15911 refuted. 0 times theorem prover too weak. 88184 trivial. 0 not checked. [2023-02-18 08:35:39,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:35:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 334093 backedges. 233944 proven. 11965 refuted. 0 times theorem prover too weak. 88184 trivial. 0 not checked. [2023-02-18 08:35:51,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373924254] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:35:51,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:35:51,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 97, 97] total 140 [2023-02-18 08:35:51,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612225140] [2023-02-18 08:35:51,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:35:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2023-02-18 08:35:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:35:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2023-02-18 08:35:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1865, Invalid=17595, Unknown=0, NotChecked=0, Total=19460 [2023-02-18 08:35:51,182 INFO L87 Difference]: Start difference. First operand 2248 states and 2348 transitions. Second operand has 140 states, 140 states have (on average 2.0) internal successors, (280), 127 states have internal predecessors, (280), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-18 08:36:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:36:12,702 INFO L93 Difference]: Finished difference Result 3326 states and 3489 transitions. [2023-02-18 08:36:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 452 states. [2023-02-18 08:36:12,702 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 127 states have internal predecessors, (280), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1704 [2023-02-18 08:36:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:36:12,708 INFO L225 Difference]: With dead ends: 3326 [2023-02-18 08:36:12,708 INFO L226 Difference]: Without dead ends: 2248 [2023-02-18 08:36:12,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3981 GetRequests, 3286 SyntacticMatches, 129 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113864 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=41967, Invalid=280089, Unknown=0, NotChecked=0, Total=322056 [2023-02-18 08:36:12,733 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 261 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 15810 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 15827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 15810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-02-18 08:36:12,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1212 Invalid, 15827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 15810 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-02-18 08:36:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2023-02-18 08:36:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2023-02-18 08:36:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2213 states have (on average 1.043831902394939) internal successors, (2310), 2213 states have internal predecessors, (2310), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 32 states have call predecessors, (32), 2 states have call successors, (32) [2023-02-18 08:36:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2345 transitions. [2023-02-18 08:36:13,663 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2345 transitions. Word has length 1704 [2023-02-18 08:36:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:36:13,663 INFO L495 AbstractCegarLoop]: Abstraction has 2248 states and 2345 transitions. [2023-02-18 08:36:13,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.0) internal successors, (280), 127 states have internal predecessors, (280), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-18 08:36:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2345 transitions. [2023-02-18 08:36:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2023-02-18 08:36:13,685 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:36:13,686 INFO L195 NwaCegarLoop]: trace histogram [462, 462, 462, 31, 30, 30, 30, 30, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1] [2023-02-18 08:36:13,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-02-18 08:36:13,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-02-18 08:36:13,889 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-18 08:36:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:36:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 129611517, now seen corresponding path program 24 times [2023-02-18 08:36:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:36:13,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127197038] [2023-02-18 08:36:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:36:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:36:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 08:36:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:36:58,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:36:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:02,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 08:37:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:37:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 336912 backedges. 247306 proven. 15565 refuted. 0 times theorem prover too weak. 74041 trivial. 0 not checked. [2023-02-18 08:37:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:37:13,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127197038] [2023-02-18 08:37:13,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127197038] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:37:13,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414080625] [2023-02-18 08:37:13,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:37:13,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:37:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:37:13,658 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 08:37:13,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-02-18 08:37:19,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-02-18 08:37:19,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:37:19,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-18 08:37:19,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:37:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 336912 backedges. 167292 proven. 67488 refuted. 0 times theorem prover too weak. 102132 trivial. 0 not checked. [2023-02-18 08:37:22,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:37:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 336912 backedges. 167292 proven. 67488 refuted. 0 times theorem prover too weak. 102132 trivial. 0 not checked. [2023-02-18 08:37:28,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414080625] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:37:28,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:37:28,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 60, 60] total 231 [2023-02-18 08:37:28,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688948358] [2023-02-18 08:37:28,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:37:28,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 231 states [2023-02-18 08:37:28,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:37:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2023-02-18 08:37:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4480, Invalid=48650, Unknown=0, NotChecked=0, Total=53130 [2023-02-18 08:37:28,050 INFO L87 Difference]: Start difference. First operand 2248 states and 2345 transitions. Second operand has 231 states, 231 states have (on average 2.0735930735930737) internal successors, (479), 198 states have internal predecessors, (479), 1 states have call successors, (2), 1 states have call predecessors, (2), 35 states have return successors, (35), 35 states have call predecessors, (35), 1 states have call successors, (35)