./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 7e1ff0e6 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-?-7e1ff0e [2023-02-15 02:11:11,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:11:11,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:11:11,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:11:11,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:11:11,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:11:11,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:11:11,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:11:11,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:11:11,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:11:11,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:11:11,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:11:11,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:11:11,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:11:11,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:11:11,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:11:11,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:11:11,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:11:11,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:11:11,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:11:11,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:11:11,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:11:11,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:11:11,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:11:11,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:11:11,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:11:11,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:11:11,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:11:11,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:11:11,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:11:11,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:11:11,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:11:11,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:11:11,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:11:11,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:11:11,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:11:11,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:11:11,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:11:11,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:11:11,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:11:11,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:11:11,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 02:11:11,871 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:11:11,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:11:11,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:11:11,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:11:11,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 02:11:11,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 02:11:11,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:11:11,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:11:11,874 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:11:11,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:11:11,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:11:11,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:11:11,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:11:11,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 02:11:11,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 02:11:11,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:11:11,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:11:11,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 02:11:11,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:11:11,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:11:11,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 02:11:11,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 02:11:11,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 02:11:11,878 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 02:11:11,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-02-15 02:11:12,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:11:12,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:11:12,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:11:12,056 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:11:12,056 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:11:12,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 02:11:13,018 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:11:13,214 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:11:13,214 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 02:11:13,218 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59db299a9/67c21d1c6df645d6b09c89b50e6084f4/FLAGde9149019 [2023-02-15 02:11:13,235 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59db299a9/67c21d1c6df645d6b09c89b50e6084f4 [2023-02-15 02:11:13,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:11:13,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:11:13,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:11:13,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:11:13,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:11:13,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa62f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13, skipping insertion in model container [2023-02-15 02:11:13,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:11:13,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:11:13,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:11:13,379 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:11:13,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:11:13,398 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:11:13,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13 WrapperNode [2023-02-15 02:11:13,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:11:13,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:11:13,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:11:13,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:11:13,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,418 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-02-15 02:11:13,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:11:13,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:11:13,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:11:13,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:11:13,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:11:13,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:11:13,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:11:13,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:11:13,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (1/1) ... [2023-02-15 02:11:13,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:11:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:13,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 02:11:13,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 02:11:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-15 02:11:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-15 02:11:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:11:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:11:13,539 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:11:13,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:11:13,677 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:11:13,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:11:13,682 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 02:11:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:11:13 BoogieIcfgContainer [2023-02-15 02:11:13,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:11:13,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 02:11:13,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 02:11:13,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 02:11:13,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:11:13" (1/3) ... [2023-02-15 02:11:13,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f9c0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:11:13, skipping insertion in model container [2023-02-15 02:11:13,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:11:13" (2/3) ... [2023-02-15 02:11:13,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f9c0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:11:13, skipping insertion in model container [2023-02-15 02:11:13,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:11:13" (3/3) ... [2023-02-15 02:11:13,695 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-02-15 02:11:13,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 02:11:13,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 02:11:13,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 02:11:13,769 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;@1048e807, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 02:11:13,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 02:11:13,775 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) [2023-02-15 02:11:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 02:11:13,784 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:13,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:13,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2023-02-15 02:11:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:13,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298556762] [2023-02-15 02:11:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:13,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:13,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:13,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298556762] [2023-02-15 02:11:13,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298556762] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:13,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:13,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:11:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840700795] [2023-02-15 02:11:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:13,933 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) [2023-02-15 02:11:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,022 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-15 02:11:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:11:14,023 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 [2023-02-15 02:11:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,028 INFO L225 Difference]: With dead ends: 65 [2023-02-15 02:11:14,028 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 02:11:14,030 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 [2023-02-15 02:11:14,032 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 [2023-02-15 02:11:14,032 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] [2023-02-15 02:11:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 02:11:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-15 02:11:14,054 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) [2023-02-15 02:11:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-15 02:11:14,056 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-15 02:11:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,056 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-15 02:11:14,056 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) [2023-02-15 02:11:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-15 02:11:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 02:11:14,057 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 02:11:14,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2023-02-15 02:11:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766270155] [2023-02-15 02:11:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:14,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:14,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766270155] [2023-02-15 02:11:14,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766270155] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:14,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:14,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:11:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295187739] [2023-02-15 02:11:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:14,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:14,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:14,096 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) [2023-02-15 02:11:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,122 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 02:11:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 02:11:14,122 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 [2023-02-15 02:11:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,123 INFO L225 Difference]: With dead ends: 34 [2023-02-15 02:11:14,123 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 02:11:14,123 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 [2023-02-15 02:11:14,124 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 [2023-02-15 02:11:14,125 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] [2023-02-15 02:11:14,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 02:11:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 02:11:14,129 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) [2023-02-15 02:11:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-15 02:11:14,130 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-15 02:11:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,130 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-15 02:11:14,130 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) [2023-02-15 02:11:14,130 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-15 02:11:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 02:11:14,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 02:11:14,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash -114082075, now seen corresponding path program 1 times [2023-02-15 02:11:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632435613] [2023-02-15 02:11:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632435613] [2023-02-15 02:11:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632435613] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835021117] [2023-02-15 02:11:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:14,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:14,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:14,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 02:11:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:11:14,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:14,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:11:14,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835021117] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:14,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:14,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 02:11:14,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999356160] [2023-02-15 02:11:14,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:14,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 02:11:14,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 02:11:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 02:11:14,407 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) [2023-02-15 02:11:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,471 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-15 02:11:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 02:11:14,472 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 [2023-02-15 02:11:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,474 INFO L225 Difference]: With dead ends: 39 [2023-02-15 02:11:14,474 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 02:11:14,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-15 02:11:14,476 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 [2023-02-15 02:11:14,476 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] [2023-02-15 02:11:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 02:11:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-15 02:11:14,487 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) [2023-02-15 02:11:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-15 02:11:14,488 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-15 02:11:14,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,488 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-15 02:11:14,488 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) [2023-02-15 02:11:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-15 02:11:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 02:11:14,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 02:11:14,695 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 [2023-02-15 02:11:14,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2023-02-15 02:11:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501214459] [2023-02-15 02:11:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:14,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501214459] [2023-02-15 02:11:14,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501214459] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:14,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:14,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 02:11:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305310011] [2023-02-15 02:11:14,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:14,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 02:11:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 02:11:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:14,762 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) [2023-02-15 02:11:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,768 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 02:11:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 02:11:14,768 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 [2023-02-15 02:11:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,769 INFO L225 Difference]: With dead ends: 34 [2023-02-15 02:11:14,769 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 02:11:14,769 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 [2023-02-15 02:11:14,770 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 [2023-02-15 02:11:14,770 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] [2023-02-15 02:11:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 02:11:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-15 02:11:14,777 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) [2023-02-15 02:11:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-15 02:11:14,777 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-15 02:11:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,778 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-15 02:11:14,778 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) [2023-02-15 02:11:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-15 02:11:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 02:11:14,778 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 02:11:14,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2023-02-15 02:11:14,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291490059] [2023-02-15 02:11:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:14,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:14,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291490059] [2023-02-15 02:11:14,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291490059] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:14,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:14,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 02:11:14,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589506671] [2023-02-15 02:11:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 02:11:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 02:11:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:11:14,838 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) [2023-02-15 02:11:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,845 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 02:11:14,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 02:11:14,845 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 [2023-02-15 02:11:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,846 INFO L225 Difference]: With dead ends: 31 [2023-02-15 02:11:14,846 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 02:11:14,846 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 [2023-02-15 02:11:14,847 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 [2023-02-15 02:11:14,847 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] [2023-02-15 02:11:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 02:11:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 02:11:14,851 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) [2023-02-15 02:11:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 02:11:14,851 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-15 02:11:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,852 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 02:11:14,852 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) [2023-02-15 02:11:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 02:11:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:11:14,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,853 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 02:11:14,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2023-02-15 02:11:14,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630326566] [2023-02-15 02:11:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:14,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630326566] [2023-02-15 02:11:14,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630326566] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:14,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:14,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 02:11:14,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575170977] [2023-02-15 02:11:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:14,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:11:14,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:11:14,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:11:14,907 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) [2023-02-15 02:11:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:14,937 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-15 02:11:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:11:14,940 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 [2023-02-15 02:11:14,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:14,940 INFO L225 Difference]: With dead ends: 44 [2023-02-15 02:11:14,940 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 02:11:14,941 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 [2023-02-15 02:11:14,941 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 [2023-02-15 02:11:14,941 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] [2023-02-15 02:11:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 02:11:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-15 02:11:14,945 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) [2023-02-15 02:11:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-15 02:11:14,946 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-15 02:11:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:14,946 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-15 02:11:14,946 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) [2023-02-15 02:11:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-15 02:11:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:11:14,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:14,947 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:14,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 02:11:14,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 468589560, now seen corresponding path program 1 times [2023-02-15 02:11:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222160883] [2023-02-15 02:11:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:11:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:15,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222160883] [2023-02-15 02:11:15,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222160883] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:15,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:11:15,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 02:11:15,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053259638] [2023-02-15 02:11:15,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 02:11:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:15,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 02:11:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:11:15,042 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) [2023-02-15 02:11:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:15,062 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 02:11:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 02:11:15,063 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 [2023-02-15 02:11:15,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:15,064 INFO L225 Difference]: With dead ends: 60 [2023-02-15 02:11:15,064 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 02:11:15,064 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 [2023-02-15 02:11:15,065 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 [2023-02-15 02:11:15,065 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] [2023-02-15 02:11:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 02:11:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 02:11:15,069 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) [2023-02-15 02:11:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 02:11:15,069 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-15 02:11:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:15,069 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 02:11:15,069 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) [2023-02-15 02:11:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 02:11:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 02:11:15,070 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:15,070 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 02:11:15,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:15,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2023-02-15 02:11:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:15,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628722679] [2023-02-15 02:11:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 02:11:15,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:15,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628722679] [2023-02-15 02:11:15,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628722679] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:15,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413065560] [2023-02-15 02:11:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:15,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:15,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:15,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:15,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 02:11:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 02:11:15,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 02:11:15,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 02:11:15,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413065560] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:11:15,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 02:11:15,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-15 02:11:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284761642] [2023-02-15 02:11:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:11:15,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 02:11:15,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 02:11:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-15 02:11:15,242 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) [2023-02-15 02:11:15,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:15,266 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-15 02:11:15,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:11:15,267 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 [2023-02-15 02:11:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:15,267 INFO L225 Difference]: With dead ends: 38 [2023-02-15 02:11:15,267 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 02:11:15,267 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 [2023-02-15 02:11:15,268 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 [2023-02-15 02:11:15,268 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] [2023-02-15 02:11:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 02:11:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 02:11:15,272 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) [2023-02-15 02:11:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-15 02:11:15,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-15 02:11:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:15,273 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-15 02:11:15,273 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) [2023-02-15 02:11:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-15 02:11:15,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 02:11:15,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:15,273 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] [2023-02-15 02:11:15,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:15,478 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 [2023-02-15 02:11:15,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 255701234, now seen corresponding path program 1 times [2023-02-15 02:11:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:15,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143437296] [2023-02-15 02:11:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 02:11:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143437296] [2023-02-15 02:11:15,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143437296] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:15,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94494345] [2023-02-15 02:11:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:15,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:15,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 02:11:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:15,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 02:11:15,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:11:15,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:11:15,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94494345] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:15,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:15,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-02-15 02:11:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258550406] [2023-02-15 02:11:15,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:15,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 02:11:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 02:11:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-15 02:11:15,765 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) [2023-02-15 02:11:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:15,954 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-02-15 02:11:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-15 02:11:15,955 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 [2023-02-15 02:11:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:15,957 INFO L225 Difference]: With dead ends: 128 [2023-02-15 02:11:15,957 INFO L226 Difference]: Without dead ends: 91 [2023-02-15 02:11:15,958 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 [2023-02-15 02:11:15,959 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-02-15 02:11:15,959 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] [2023-02-15 02:11:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-15 02:11:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-02-15 02:11:15,967 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) [2023-02-15 02:11:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-02-15 02:11:15,968 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-02-15 02:11:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:15,968 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-02-15 02:11:15,969 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) [2023-02-15 02:11:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-02-15 02:11:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-15 02:11:15,970 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:15,970 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] [2023-02-15 02:11:15,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:16,175 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 [2023-02-15 02:11:16,176 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1292177225, now seen corresponding path program 2 times [2023-02-15 02:11:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:16,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778106772] [2023-02-15 02:11:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-15 02:11:16,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:16,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778106772] [2023-02-15 02:11:16,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778106772] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:16,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547791092] [2023-02-15 02:11:16,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:11:16,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:16,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:16,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 02:11:16,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:11:16,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:16,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 02:11:16,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-15 02:11:16,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-15 02:11:17,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547791092] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:17,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:17,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 21 [2023-02-15 02:11:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326727707] [2023-02-15 02:11:17,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 02:11:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 02:11:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-02-15 02:11:17,378 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) [2023-02-15 02:11:17,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:17,574 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-02-15 02:11:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 02:11:17,575 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 [2023-02-15 02:11:17,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:17,575 INFO L225 Difference]: With dead ends: 145 [2023-02-15 02:11:17,576 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 02:11:17,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 153 SyntacticMatches, 16 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 02:11:17,577 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 [2023-02-15 02:11:17,577 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] [2023-02-15 02:11:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 02:11:17,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-15 02:11:17,583 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) [2023-02-15 02:11:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-02-15 02:11:17,584 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 82 [2023-02-15 02:11:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:17,584 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-02-15 02:11:17,584 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) [2023-02-15 02:11:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-02-15 02:11:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-15 02:11:17,585 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:17,586 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] [2023-02-15 02:11:17,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:17,790 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 [2023-02-15 02:11:17,790 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -375510631, now seen corresponding path program 3 times [2023-02-15 02:11:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:17,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203087757] [2023-02-15 02:11:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:17,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-15 02:11:18,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:18,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203087757] [2023-02-15 02:11:18,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203087757] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:18,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799211100] [2023-02-15 02:11:18,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:11:18,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:18,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:18,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 02:11:18,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 02:11:18,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:18,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 02:11:18,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-15 02:11:18,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-15 02:11:18,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799211100] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:18,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:18,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-02-15 02:11:18,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697161753] [2023-02-15 02:11:18,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:18,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-15 02:11:18,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:18,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-15 02:11:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-02-15 02:11:18,373 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) [2023-02-15 02:11:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:18,835 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-02-15 02:11:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 02:11:18,836 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 [2023-02-15 02:11:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:18,837 INFO L225 Difference]: With dead ends: 154 [2023-02-15 02:11:18,837 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 02:11:18,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 02:11:18,839 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 [2023-02-15 02:11:18,839 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] [2023-02-15 02:11:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 02:11:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-02-15 02:11:18,847 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) [2023-02-15 02:11:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-15 02:11:18,848 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 98 [2023-02-15 02:11:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:18,849 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-15 02:11:18,849 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) [2023-02-15 02:11:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-15 02:11:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-02-15 02:11:18,851 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:18,851 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] [2023-02-15 02:11:18,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 02:11:19,055 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 [2023-02-15 02:11:19,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1162975598, now seen corresponding path program 4 times [2023-02-15 02:11:19,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:19,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699051083] [2023-02-15 02:11:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-02-15 02:11:19,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699051083] [2023-02-15 02:11:19,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699051083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:19,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134561390] [2023-02-15 02:11:19,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:11:19,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:19,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:19,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:19,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 02:11:19,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:11:19,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 02:11:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-02-15 02:11:19,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2023-02-15 02:11:20,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134561390] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:20,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:20,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2023-02-15 02:11:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279947975] [2023-02-15 02:11:20,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:20,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 02:11:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 02:11:20,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 02:11:20,806 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 02:11:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:21,018 INFO L93 Difference]: Finished difference Result 656 states and 740 transitions. [2023-02-15 02:11:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-15 02:11:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2023-02-15 02:11:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:21,020 INFO L225 Difference]: With dead ends: 656 [2023-02-15 02:11:21,020 INFO L226 Difference]: Without dead ends: 480 [2023-02-15 02:11:21,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 02:11:21,022 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 81 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:21,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 218 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:11:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-15 02:11:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 232. [2023-02-15 02:11:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 215 states have (on average 1.0930232558139534) internal successors, (235), 215 states have internal predecessors, (235), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 02:11:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2023-02-15 02:11:21,037 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 133 [2023-02-15 02:11:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:21,037 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2023-02-15 02:11:21,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.6097560975609757) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 02:11:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2023-02-15 02:11:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-02-15 02:11:21,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:21,039 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:21,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:21,245 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 [2023-02-15 02:11:21,246 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1114086214, now seen corresponding path program 5 times [2023-02-15 02:11:21,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804952195] [2023-02-15 02:11:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:21,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1761 proven. 51 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2023-02-15 02:11:22,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:22,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804952195] [2023-02-15 02:11:22,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804952195] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:22,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290311939] [2023-02-15 02:11:22,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:11:22,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:22,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:22,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:22,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 02:11:22,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 02:11:22,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:22,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 02:11:22,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1323 proven. 88 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 02:11:22,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 1341 proven. 70 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-02-15 02:11:23,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290311939] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:23,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:23,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2023-02-15 02:11:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028210813] [2023-02-15 02:11:23,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-15 02:11:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-15 02:11:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2023-02-15 02:11:23,274 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 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) [2023-02-15 02:11:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:23,646 INFO L93 Difference]: Finished difference Result 496 states and 546 transitions. [2023-02-15 02:11:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 02:11:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 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 263 [2023-02-15 02:11:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:23,648 INFO L225 Difference]: With dead ends: 496 [2023-02-15 02:11:23,648 INFO L226 Difference]: Without dead ends: 303 [2023-02-15 02:11:23,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 532 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 02:11:23,662 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:23,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 253 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:11:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-02-15 02:11:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 290. [2023-02-15 02:11:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 270 states have (on average 1.0777777777777777) internal successors, (291), 270 states have internal predecessors, (291), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-15 02:11:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 311 transitions. [2023-02-15 02:11:23,688 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 311 transitions. Word has length 263 [2023-02-15 02:11:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:23,689 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 311 transitions. [2023-02-15 02:11:23,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 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) [2023-02-15 02:11:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 311 transitions. [2023-02-15 02:11:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-02-15 02:11:23,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:23,692 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:23,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 02:11:23,896 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 [2023-02-15 02:11:23,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1879986663, now seen corresponding path program 6 times [2023-02-15 02:11:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750008433] [2023-02-15 02:11:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:23,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1956 proven. 90 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2023-02-15 02:11:24,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:24,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750008433] [2023-02-15 02:11:24,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750008433] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:24,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342660309] [2023-02-15 02:11:24,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:11:24,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:24,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:24,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 02:11:24,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-02-15 02:11:24,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:24,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:11:24,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-02-15 02:11:25,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1413 proven. 120 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2023-02-15 02:11:25,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342660309] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:25,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:25,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2023-02-15 02:11:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668339334] [2023-02-15 02:11:25,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:25,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-15 02:11:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:25,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-15 02:11:25,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 02:11:25,727 INFO L87 Difference]: Start difference. First operand 290 states and 311 transitions. Second operand has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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) [2023-02-15 02:11:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:27,701 INFO L93 Difference]: Finished difference Result 1234 states and 1405 transitions. [2023-02-15 02:11:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 02:11:27,702 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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 294 [2023-02-15 02:11:27,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:27,708 INFO L225 Difference]: With dead ends: 1234 [2023-02-15 02:11:27,708 INFO L226 Difference]: Without dead ends: 984 [2023-02-15 02:11:27,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2023-02-15 02:11:27,716 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 465 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:27,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 356 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:11:27,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-02-15 02:11:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 382. [2023-02-15 02:11:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 359 states have (on average 1.0807799442896935) internal successors, (388), 359 states have internal predecessors, (388), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2023-02-15 02:11:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 411 transitions. [2023-02-15 02:11:27,767 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 411 transitions. Word has length 294 [2023-02-15 02:11:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:27,767 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 411 transitions. [2023-02-15 02:11:27,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 44 states have internal predecessors, (104), 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) [2023-02-15 02:11:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 411 transitions. [2023-02-15 02:11:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-02-15 02:11:27,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:27,775 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:27,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 02:11:27,979 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 [2023-02-15 02:11:27,980 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:27,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 306220470, now seen corresponding path program 7 times [2023-02-15 02:11:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:27,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328525583] [2023-02-15 02:11:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3720 proven. 138 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-02-15 02:11:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:29,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328525583] [2023-02-15 02:11:29,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328525583] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:29,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693084303] [2023-02-15 02:11:29,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:11:29,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:29,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:29,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 02:11:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:29,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 02:11:29,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2023-02-15 02:11:29,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6597 backedges. 3356 proven. 311 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2023-02-15 02:11:33,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693084303] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:33,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:33,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2023-02-15 02:11:33,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841047561] [2023-02-15 02:11:33,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:33,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-15 02:11:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-15 02:11:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-02-15 02:11:33,427 INFO L87 Difference]: Start difference. First operand 382 states and 411 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-02-15 02:11:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:34,593 INFO L93 Difference]: Finished difference Result 791 states and 853 transitions. [2023-02-15 02:11:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-02-15 02:11:34,594 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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 323 [2023-02-15 02:11:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:34,595 INFO L225 Difference]: With dead ends: 791 [2023-02-15 02:11:34,595 INFO L226 Difference]: Without dead ends: 523 [2023-02-15 02:11:34,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 625 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 02:11:34,599 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 68 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:34,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 351 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:11:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-02-15 02:11:34,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 471. [2023-02-15 02:11:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 444 states have (on average 1.0698198198198199) internal successors, (475), 444 states have internal predecessors, (475), 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) [2023-02-15 02:11:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 502 transitions. [2023-02-15 02:11:34,652 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 502 transitions. Word has length 323 [2023-02-15 02:11:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:34,653 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 502 transitions. [2023-02-15 02:11:34,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2023-02-15 02:11:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 502 transitions. [2023-02-15 02:11:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-02-15 02:11:34,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:34,657 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:34,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 02:11:34,861 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 [2023-02-15 02:11:34,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:34,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash 911331609, now seen corresponding path program 8 times [2023-02-15 02:11:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:34,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060301849] [2023-02-15 02:11:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:35,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4322 proven. 195 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2023-02-15 02:11:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:36,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060301849] [2023-02-15 02:11:36,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060301849] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:36,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532173546] [2023-02-15 02:11:36,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:11:36,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:36,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:36,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:36,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 02:11:36,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:11:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-15 02:11:36,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 02:11:37,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7701 backedges. 4381 proven. 499 refuted. 0 times theorem prover too weak. 2821 trivial. 0 not checked. [2023-02-15 02:11:40,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532173546] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:40,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:40,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2023-02-15 02:11:40,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303161858] [2023-02-15 02:11:40,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:40,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-15 02:11:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-15 02:11:40,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2023-02-15 02:11:40,947 INFO L87 Difference]: Start difference. First operand 471 states and 502 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:11:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:42,300 INFO L93 Difference]: Finished difference Result 962 states and 1025 transitions. [2023-02-15 02:11:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 02:11:42,300 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 348 [2023-02-15 02:11:42,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:42,302 INFO L225 Difference]: With dead ends: 962 [2023-02-15 02:11:42,302 INFO L226 Difference]: Without dead ends: 670 [2023-02-15 02:11:42,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 667 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2023-02-15 02:11:42,307 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:42,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 422 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:11:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-02-15 02:11:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 590. [2023-02-15 02:11:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 558 states have (on average 1.060931899641577) internal successors, (592), 558 states have internal predecessors, (592), 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) [2023-02-15 02:11:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 624 transitions. [2023-02-15 02:11:42,343 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 624 transitions. Word has length 348 [2023-02-15 02:11:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:42,343 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 624 transitions. [2023-02-15 02:11:42,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:11:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 624 transitions. [2023-02-15 02:11:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-02-15 02:11:42,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:42,346 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:42,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:42,551 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 [2023-02-15 02:11:42,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1035217017, now seen corresponding path program 9 times [2023-02-15 02:11:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296724035] [2023-02-15 02:11:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:42,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:11:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 4857 proven. 267 refuted. 0 times theorem prover too weak. 3403 trivial. 0 not checked. [2023-02-15 02:11:43,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:43,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296724035] [2023-02-15 02:11:43,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296724035] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:43,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085407751] [2023-02-15 02:11:43,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:11:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:43,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:43,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 02:11:44,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-15 02:11:44,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 02:11:44,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2023-02-15 02:11:44,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8527 backedges. 1768 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2023-02-15 02:11:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085407751] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:45,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:45,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2023-02-15 02:11:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503926696] [2023-02-15 02:11:45,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:45,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-02-15 02:11:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-02-15 02:11:45,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=4555, Unknown=0, NotChecked=0, Total=5256 [2023-02-15 02:11:45,287 INFO L87 Difference]: Start difference. First operand 590 states and 624 transitions. Second operand has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 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) [2023-02-15 02:11:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:47,314 INFO L93 Difference]: Finished difference Result 1758 states and 1973 transitions. [2023-02-15 02:11:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-02-15 02:11:47,314 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 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 360 [2023-02-15 02:11:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:47,319 INFO L225 Difference]: With dead ends: 1758 [2023-02-15 02:11:47,319 INFO L226 Difference]: Without dead ends: 1438 [2023-02-15 02:11:47,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4633 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3170, Invalid=16570, Unknown=0, NotChecked=0, Total=19740 [2023-02-15 02:11:47,323 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 663 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:47,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 584 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 02:11:47,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2023-02-15 02:11:47,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 805. [2023-02-15 02:11:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 767 states have (on average 1.0625814863102998) internal successors, (815), 767 states have internal predecessors, (815), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2023-02-15 02:11:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 853 transitions. [2023-02-15 02:11:47,392 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 853 transitions. Word has length 360 [2023-02-15 02:11:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 853 transitions. [2023-02-15 02:11:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8630136986301369) internal successors, (136), 72 states have internal predecessors, (136), 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) [2023-02-15 02:11:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 853 transitions. [2023-02-15 02:11:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-02-15 02:11:47,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:47,395 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:47,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-15 02:11:47,600 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 [2023-02-15 02:11:47,601 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash 573081926, now seen corresponding path program 10 times [2023-02-15 02:11:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183823472] [2023-02-15 02:11:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 6995 proven. 336 refuted. 0 times theorem prover too weak. 4073 trivial. 0 not checked. [2023-02-15 02:11:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183823472] [2023-02-15 02:11:49,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183823472] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977239858] [2023-02-15 02:11:49,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:11:49,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:49,063 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:49,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 02:11:49,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:11:49,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 02:11:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2726 trivial. 0 not checked. [2023-02-15 02:11:49,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:11:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 11404 backedges. 7605 proven. 1073 refuted. 0 times theorem prover too weak. 2726 trivial. 0 not checked. [2023-02-15 02:11:54,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977239858] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:11:54,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:11:54,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2023-02-15 02:11:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968986759] [2023-02-15 02:11:54,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:11:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-15 02:11:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:11:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-15 02:11:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 02:11:54,349 INFO L87 Difference]: Start difference. First operand 805 states and 853 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:11:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:11:57,049 INFO L93 Difference]: Finished difference Result 1556 states and 1644 transitions. [2023-02-15 02:11:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-02-15 02:11:57,049 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 389 [2023-02-15 02:11:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:11:57,056 INFO L225 Difference]: With dead ends: 1556 [2023-02-15 02:11:57,057 INFO L226 Difference]: Without dead ends: 1156 [2023-02-15 02:11:57,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 733 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2023-02-15 02:11:57,074 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 105 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:11:57,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 618 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:11:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-02-15 02:11:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1002. [2023-02-15 02:11:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 957 states have (on average 1.0553814002089865) internal successors, (1010), 957 states have internal predecessors, (1010), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2023-02-15 02:11:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1055 transitions. [2023-02-15 02:11:57,161 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1055 transitions. Word has length 389 [2023-02-15 02:11:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:11:57,161 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1055 transitions. [2023-02-15 02:11:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:11:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1055 transitions. [2023-02-15 02:11:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2023-02-15 02:11:57,164 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:11:57,165 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:11:57,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 02:11:57,370 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 [2023-02-15 02:11:57,370 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:11:57,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:11:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1070434506, now seen corresponding path program 11 times [2023-02-15 02:11:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:11:57,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434577508] [2023-02-15 02:11:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:11:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:11:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:57,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:11:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:11:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:11:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 6823 proven. 420 refuted. 0 times theorem prover too weak. 4670 trivial. 0 not checked. [2023-02-15 02:11:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:11:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434577508] [2023-02-15 02:11:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434577508] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:11:58,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745065326] [2023-02-15 02:11:58,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:11:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:11:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:11:58,690 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:11:58,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 02:11:59,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-15 02:11:59,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:11:59,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 02:11:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:11:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8269 proven. 1615 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-02-15 02:11:59,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:12:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11913 backedges. 8455 proven. 1429 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-02-15 02:12:04,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745065326] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:12:04,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:12:04,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2023-02-15 02:12:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255032248] [2023-02-15 02:12:04,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:12:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-15 02:12:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:12:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-15 02:12:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2023-02-15 02:12:04,196 INFO L87 Difference]: Start difference. First operand 1002 states and 1055 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:12:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:07,489 INFO L93 Difference]: Finished difference Result 1874 states and 1967 transitions. [2023-02-15 02:12:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-02-15 02:12:07,490 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 395 [2023-02-15 02:12:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:07,497 INFO L225 Difference]: With dead ends: 1874 [2023-02-15 02:12:07,498 INFO L226 Difference]: Without dead ends: 1450 [2023-02-15 02:12:07,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 747 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2023-02-15 02:12:07,502 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 4111 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 590 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4111 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-15 02:12:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-02-15 02:12:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1250. [2023-02-15 02:12:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1197 states have (on average 1.050125313283208) internal successors, (1257), 1197 states have internal predecessors, (1257), 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) [2023-02-15 02:12:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1310 transitions. [2023-02-15 02:12:07,623 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1310 transitions. Word has length 395 [2023-02-15 02:12:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:07,624 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1310 transitions. [2023-02-15 02:12:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 02:12:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1310 transitions. [2023-02-15 02:12:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-02-15 02:12:07,628 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:07,628 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:07,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-15 02:12:07,834 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 [2023-02-15 02:12:07,834 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 183146630, now seen corresponding path program 12 times [2023-02-15 02:12:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:07,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018660381] [2023-02-15 02:12:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:12:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 9020 proven. 1914 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2023-02-15 02:12:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:10,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018660381] [2023-02-15 02:12:10,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018660381] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636647748] [2023-02-15 02:12:10,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:12:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:10,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:10,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 02:12:11,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-15 02:12:11,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:12:11,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 02:12:11,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:12:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-02-15 02:12:12,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:12:18,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12573 backedges. 582 proven. 10201 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2023-02-15 02:12:18,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636647748] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:12:18,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:12:18,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2023-02-15 02:12:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214213547] [2023-02-15 02:12:18,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:12:18,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-02-15 02:12:18,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:12:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-02-15 02:12:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2023-02-15 02:12:18,636 INFO L87 Difference]: Start difference. First operand 1250 states and 1310 transitions. Second operand has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 02:12:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:40,971 INFO L93 Difference]: Finished difference Result 4282 states and 4549 transitions. [2023-02-15 02:12:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-02-15 02:12:40,972 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 411 [2023-02-15 02:12:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:40,981 INFO L225 Difference]: With dead ends: 4282 [2023-02-15 02:12:40,981 INFO L226 Difference]: Without dead ends: 3484 [2023-02-15 02:12:41,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2023-02-15 02:12:41,014 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1441 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:41,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 1209 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:12:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2023-02-15 02:12:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 2786. [2023-02-15 02:12:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2677 states have (on average 1.0429585356742623) internal successors, (2792), 2677 states have internal predecessors, (2792), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2023-02-15 02:12:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 2901 transitions. [2023-02-15 02:12:41,444 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 2901 transitions. Word has length 411 [2023-02-15 02:12:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:41,445 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 2901 transitions. [2023-02-15 02:12:41,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.4923076923076923) internal successors, (324), 98 states have internal predecessors, (324), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2023-02-15 02:12:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 2901 transitions. [2023-02-15 02:12:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2023-02-15 02:12:41,463 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:41,463 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:41,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:41,672 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 [2023-02-15 02:12:41,672 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash -207241758, now seen corresponding path program 13 times [2023-02-15 02:12:41,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602604715] [2023-02-15 02:12:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:41,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:42,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:12:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:46,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1222 proven. 6 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 02:12:48,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:48,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602604715] [2023-02-15 02:12:48,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602604715] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:48,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195045543] [2023-02-15 02:12:48,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:12:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:48,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:48,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 02:12:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:49,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 02:12:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:12:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 02:12:49,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:12:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 67536 backedges. 1223 proven. 5 refuted. 0 times theorem prover too weak. 66308 trivial. 0 not checked. [2023-02-15 02:12:50,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195045543] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:12:50,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:12:50,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2023-02-15 02:12:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869424846] [2023-02-15 02:12:50,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:12:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 02:12:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:12:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 02:12:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 02:12:50,713 INFO L87 Difference]: Start difference. First operand 2786 states and 2901 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 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) [2023-02-15 02:12:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:12:50,971 INFO L93 Difference]: Finished difference Result 4071 states and 4238 transitions. [2023-02-15 02:12:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 02:12:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 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 861 [2023-02-15 02:12:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:12:50,978 INFO L225 Difference]: With dead ends: 4071 [2023-02-15 02:12:50,978 INFO L226 Difference]: Without dead ends: 2037 [2023-02-15 02:12:50,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1797 GetRequests, 1773 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-02-15 02:12:50,985 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:12:50,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:12:50,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-02-15 02:12:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-02-15 02:12:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 1959 states have (on average 1.0423685553854007) internal successors, (2042), 1959 states have internal predecessors, (2042), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2023-02-15 02:12:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2120 transitions. [2023-02-15 02:12:51,277 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2120 transitions. Word has length 861 [2023-02-15 02:12:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:12:51,278 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 2120 transitions. [2023-02-15 02:12:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 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) [2023-02-15 02:12:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2120 transitions. [2023-02-15 02:12:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2023-02-15 02:12:51,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:12:51,288 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-02-15 02:12:51,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 02:12:51,497 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 [2023-02-15 02:12:51,498 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:12:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:12:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1413464359, now seen corresponding path program 14 times [2023-02-15 02:12:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:12:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732344588] [2023-02-15 02:12:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:12:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:12:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:12:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:58,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:12:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:12:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2785 proven. 30 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 02:12:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:12:59,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732344588] [2023-02-15 02:12:59,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732344588] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:12:59,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016596175] [2023-02-15 02:12:59,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:12:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:12:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:12:59,931 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:12:59,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 02:13:00,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:13:00,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:13:00,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 02:13:00,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:13:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 02:13:00,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 69246 backedges. 2789 proven. 26 refuted. 0 times theorem prover too weak. 66431 trivial. 0 not checked. [2023-02-15 02:13:02,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016596175] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:02,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:02,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2023-02-15 02:13:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738363967] [2023-02-15 02:13:02,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 02:13:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 02:13:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-02-15 02:13:02,754 INFO L87 Difference]: Start difference. First operand 2037 states and 2120 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-02-15 02:13:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:13:02,957 INFO L93 Difference]: Finished difference Result 2624 states and 2730 transitions. [2023-02-15 02:13:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 02:13:02,958 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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 878 [2023-02-15 02:13:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:13:02,961 INFO L225 Difference]: With dead ends: 2624 [2023-02-15 02:13:02,961 INFO L226 Difference]: Without dead ends: 1339 [2023-02-15 02:13:02,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1843 GetRequests, 1804 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-02-15 02:13:02,964 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:13:02,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 125 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:13:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-02-15 02:13:03,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-02-15 02:13:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1290 states have (on average 1.0410852713178294) internal successors, (1343), 1290 states have internal predecessors, (1343), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2023-02-15 02:13:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1392 transitions. [2023-02-15 02:13:03,077 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1392 transitions. Word has length 878 [2023-02-15 02:13:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:13:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1392 transitions. [2023-02-15 02:13:03,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 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) [2023-02-15 02:13:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1392 transitions. [2023-02-15 02:13:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2023-02-15 02:13:03,084 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:13:03,085 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:13:03,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-02-15 02:13:03,294 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 [2023-02-15 02:13:03,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:13:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:13:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1429737837, now seen corresponding path program 15 times [2023-02-15 02:13:03,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:13:03,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773753539] [2023-02-15 02:13:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:13:03,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:13:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:13:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:07,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:07,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 23418 proven. 615 refuted. 0 times theorem prover too weak. 47589 trivial. 0 not checked. [2023-02-15 02:13:08,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:13:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773753539] [2023-02-15 02:13:08,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773753539] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:13:08,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674649516] [2023-02-15 02:13:08,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:13:08,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:13:08,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:13:08,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:13:08,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 02:13:09,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-02-15 02:13:09,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:13:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 02:13:09,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:13:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 17053 proven. 836 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2023-02-15 02:13:10,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 71622 backedges. 17053 proven. 836 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2023-02-15 02:13:11,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674649516] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:11,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:11,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2023-02-15 02:13:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36462005] [2023-02-15 02:13:11,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-02-15 02:13:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:11,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-02-15 02:13:11,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2023-02-15 02:13:11,899 INFO L87 Difference]: Start difference. First operand 1339 states and 1392 transitions. Second operand has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 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) [2023-02-15 02:13:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:13:16,810 INFO L93 Difference]: Finished difference Result 5350 states and 5985 transitions. [2023-02-15 02:13:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-15 02:13:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 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 898 [2023-02-15 02:13:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:13:16,821 INFO L225 Difference]: With dead ends: 5350 [2023-02-15 02:13:16,821 INFO L226 Difference]: Without dead ends: 4464 [2023-02-15 02:13:16,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 1792 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2023-02-15 02:13:16,834 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1299 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 02:13:16,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 777 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 02:13:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2023-02-15 02:13:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 1905. [2023-02-15 02:13:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1848 states have (on average 1.0443722943722944) internal successors, (1930), 1848 states have internal predecessors, (1930), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2023-02-15 02:13:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 1987 transitions. [2023-02-15 02:13:17,059 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 1987 transitions. Word has length 898 [2023-02-15 02:13:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:13:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 1987 transitions. [2023-02-15 02:13:17,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.825242718446602) internal successors, (188), 100 states have internal predecessors, (188), 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) [2023-02-15 02:13:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 1987 transitions. [2023-02-15 02:13:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-02-15 02:13:17,067 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:13:17,068 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:13:17,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 02:13:17,276 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 [2023-02-15 02:13:17,277 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:13:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:13:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash 994792221, now seen corresponding path program 16 times [2023-02-15 02:13:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:13:17,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490538479] [2023-02-15 02:13:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:13:17,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:13:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:13:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:13:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 40116 proven. 726 refuted. 0 times theorem prover too weak. 48198 trivial. 0 not checked. [2023-02-15 02:13:24,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:13:24,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490538479] [2023-02-15 02:13:24,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490538479] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:13:24,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861959887] [2023-02-15 02:13:24,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:13:24,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:13:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:13:24,114 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:13:24,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 02:13:24,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:13:24,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:13:24,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-15 02:13:24,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:13:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 51668 proven. 3265 refuted. 0 times theorem prover too weak. 34107 trivial. 0 not checked. [2023-02-15 02:13:26,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:13:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 89040 backedges. 51668 proven. 3265 refuted. 0 times theorem prover too weak. 34107 trivial. 0 not checked. [2023-02-15 02:13:49,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861959887] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:13:49,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:13:49,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-02-15 02:13:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177762970] [2023-02-15 02:13:49,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:13:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-15 02:13:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:13:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-15 02:13:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-02-15 02:13:49,647 INFO L87 Difference]: Start difference. First operand 1905 states and 1987 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) [2023-02-15 02:13:55,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:13:55,427 INFO L93 Difference]: Finished difference Result 3781 states and 3946 transitions. [2023-02-15 02:13:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-02-15 02:13:55,428 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 966 [2023-02-15 02:13:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:13:55,434 INFO L225 Difference]: With dead ends: 3781 [2023-02-15 02:13:55,434 INFO L226 Difference]: Without dead ends: 2620 [2023-02-15 02:13:55,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2239 GetRequests, 1877 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33434 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-02-15 02:13:55,448 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 162 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 6526 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-15 02:13:55,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 706 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 6526 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-15 02:13:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2023-02-15 02:13:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2314. [2023-02-15 02:13:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2241 states have (on average 1.039714413208389) internal successors, (2330), 2241 states have internal predecessors, (2330), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2023-02-15 02:13:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2403 transitions. [2023-02-15 02:13:55,773 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2403 transitions. Word has length 966 [2023-02-15 02:13:55,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:13:55,773 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 2403 transitions. [2023-02-15 02:13:55,774 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) [2023-02-15 02:13:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2403 transitions. [2023-02-15 02:13:55,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2023-02-15 02:13:55,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:13:55,783 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:13:55,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-15 02:13:55,993 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 [2023-02-15 02:13:55,993 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:13:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:13:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash -890451406, now seen corresponding path program 17 times [2023-02-15 02:13:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:13:55,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971205602] [2023-02-15 02:13:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:13:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:13:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:13:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:13:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:00,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:02,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 42979 proven. 846 refuted. 0 times theorem prover too weak. 52052 trivial. 0 not checked. [2023-02-15 02:14:04,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:14:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971205602] [2023-02-15 02:14:04,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971205602] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:14:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427361425] [2023-02-15 02:14:04,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:14:04,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:14:04,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:14:04,070 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:14:04,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 02:14:05,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-02-15 02:14:05,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:14:05,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 02:14:05,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:14:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 58882 proven. 4643 refuted. 0 times theorem prover too weak. 32352 trivial. 0 not checked. [2023-02-15 02:14:06,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:14:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 95877 backedges. 59738 proven. 3787 refuted. 0 times theorem prover too weak. 32352 trivial. 0 not checked. [2023-02-15 02:14:22,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427361425] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:14:22,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:14:22,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 66, 66] total 95 [2023-02-15 02:14:22,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085549372] [2023-02-15 02:14:22,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:14:22,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-02-15 02:14:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:14:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-02-15 02:14:22,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=8068, Unknown=0, NotChecked=0, Total=8930 [2023-02-15 02:14:22,852 INFO L87 Difference]: Start difference. First operand 2314 states and 2403 transitions. Second operand has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:14:28,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:14:28,965 INFO L93 Difference]: Finished difference Result 4115 states and 4273 transitions. [2023-02-15 02:14:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2023-02-15 02:14:28,966 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 1003 [2023-02-15 02:14:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:14:28,974 INFO L225 Difference]: With dead ends: 4115 [2023-02-15 02:14:28,974 INFO L226 Difference]: Without dead ends: 3124 [2023-02-15 02:14:28,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2326 GetRequests, 1962 SyntacticMatches, 57 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32811 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=12888, Invalid=82284, Unknown=0, NotChecked=0, Total=95172 [2023-02-15 02:14:28,991 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 162 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 6988 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 7011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 02:14:28,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 761 Invalid, 7011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 6988 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 02:14:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-02-15 02:14:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2754. [2023-02-15 02:14:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2671 states have (on average 1.0363159865219018) internal successors, (2768), 2671 states have internal predecessors, (2768), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2023-02-15 02:14:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 2851 transitions. [2023-02-15 02:14:29,489 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 2851 transitions. Word has length 1003 [2023-02-15 02:14:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:14:29,491 INFO L495 AbstractCegarLoop]: Abstraction has 2754 states and 2851 transitions. [2023-02-15 02:14:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2023-02-15 02:14:29,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 2851 transitions. [2023-02-15 02:14:29,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2023-02-15 02:14:29,503 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:14:29,503 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:14:29,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 02:14:29,716 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 [2023-02-15 02:14:29,716 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:14:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:14:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 275935090, now seen corresponding path program 18 times [2023-02-15 02:14:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:14:29,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289785870] [2023-02-15 02:14:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:14:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:14:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 02:14:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:14:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 45703 proven. 975 refuted. 0 times theorem prover too weak. 55259 trivial. 0 not checked. [2023-02-15 02:14:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:14:38,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289785870] [2023-02-15 02:14:38,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289785870] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:14:38,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728554552] [2023-02-15 02:14:38,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:14:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:14:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:14:38,528 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:14:38,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 02:14:40,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2023-02-15 02:14:40,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:14:40,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 02:14:40,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:14:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 36168 proven. 3938 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2023-02-15 02:14:41,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:14:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 101937 backedges. 36168 proven. 3938 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2023-02-15 02:14:43,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728554552] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:14:43,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:14:43,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2023-02-15 02:14:43,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598549075] [2023-02-15 02:14:43,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:14:43,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2023-02-15 02:14:43,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:14:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2023-02-15 02:14:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2023-02-15 02:14:43,849 INFO L87 Difference]: Start difference. First operand 2754 states and 2851 transitions. Second operand has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 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) [2023-02-15 02:14:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:14:55,314 INFO L93 Difference]: Finished difference Result 10327 states and 11387 transitions. [2023-02-15 02:14:55,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2023-02-15 02:14:55,314 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 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 1027 [2023-02-15 02:14:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:14:55,343 INFO L225 Difference]: With dead ends: 10327 [2023-02-15 02:14:55,343 INFO L226 Difference]: Without dead ends: 9101 [2023-02-15 02:14:55,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2472 GetRequests, 2033 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2023-02-15 02:14:55,366 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2730 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:14:55,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 1016 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:14:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9101 states. [2023-02-15 02:14:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9101 to 3362. [2023-02-15 02:14:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3268 states have (on average 1.040391676866585) internal successors, (3400), 3268 states have internal predecessors, (3400), 3 states have call successors, (3), 2 states have call predecessors, (3), 90 states have return successors, (91), 91 states have call predecessors, (91), 2 states have call successors, (91) [2023-02-15 02:14:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 3494 transitions. [2023-02-15 02:14:56,003 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 3494 transitions. Word has length 1027 [2023-02-15 02:14:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:14:56,003 INFO L495 AbstractCegarLoop]: Abstraction has 3362 states and 3494 transitions. [2023-02-15 02:14:56,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 128 states have internal predecessors, (240), 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) [2023-02-15 02:14:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 3494 transitions. [2023-02-15 02:14:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2023-02-15 02:14:56,016 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:14:56,016 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2023-02-15 02:14:56,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 02:14:56,229 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 [2023-02-15 02:14:56,229 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 02:14:56,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:14:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1447106061, now seen corresponding path program 19 times [2023-02-15 02:14:56,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:14:56,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368656523] [2023-02-15 02:14:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:14:56,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:14:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:14:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 02:14:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 02:15:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 128715 backedges. 69858 proven. 1113 refuted. 0 times theorem prover too weak. 57744 trivial. 0 not checked. [2023-02-15 02:15:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:15:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368656523] [2023-02-15 02:15:08,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368656523] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:15:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918510061] [2023-02-15 02:15:08,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:15:08,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:15:08,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:15:08,346 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 02:15:08,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 02:15:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:15:10,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 83 conjunts are in the unsatisfiable core [2023-02-15 02:15:10,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:15:11,946 INFO L134 CoverageAnalysis]: Checked inductivity of 128715 backedges. 86019 proven. 6106 refuted. 0 times theorem prover too weak. 36590 trivial. 0 not checked. [2023-02-15 02:15:11,946 INFO L328 TraceCheckSpWp]: Computing backward predicates...