./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 04:01:42,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:01:42,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:01:42,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:01:42,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:01:42,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:01:42,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:01:42,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:01:42,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:01:42,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:01:42,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:01:42,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:01:42,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:01:42,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:01:42,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:01:42,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:01:42,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:01:42,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:01:42,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:01:42,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:01:42,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:01:42,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:01:42,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:01:42,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:01:42,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:01:42,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:01:42,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:01:42,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:01:42,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:01:42,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:01:42,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:01:42,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:01:42,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:01:42,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:01:42,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:01:42,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:01:42,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:01:42,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:01:42,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:01:42,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:01:42,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:01:42,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 04:01:42,846 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:01:42,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:01:42,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:01:42,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:01:42,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 04:01:42,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 04:01:42,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:01:42,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:01:42,849 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:01:42,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:01:42,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 04:01:42,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:01:42,851 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:01:42,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 04:01:42,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:01:42,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:01:42,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 04:01:42,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:01:42,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:01:42,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 04:01:42,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 04:01:42,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:01:42,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 04:01:42,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 04:01:42,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 04:01:42,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 04:01:42,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 04:01:42,854 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 04:01:42,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-02-17 04:01:43,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:01:43,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:01:43,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:01:43,081 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:01:43,082 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:01:43,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-17 04:01:44,141 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:01:44,330 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:01:44,345 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-17 04:01:44,353 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dc17e92/e765034eae10418bb3d42b29a8772471/FLAG13f2a4dec [2023-02-17 04:01:44,365 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4dc17e92/e765034eae10418bb3d42b29a8772471 [2023-02-17 04:01:44,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:01:44,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:01:44,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:01:44,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:01:44,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:01:44,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740a4526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44, skipping insertion in model container [2023-02-17 04:01:44,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:01:44,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:01:44,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:01:44,496 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:01:44,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:01:44,519 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:01:44,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44 WrapperNode [2023-02-17 04:01:44,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:01:44,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:01:44,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:01:44,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:01:44,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,537 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-02-17 04:01:44,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:01:44,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:01:44,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:01:44,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:01:44,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:01:44,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:01:44,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:01:44,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:01:44,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (1/1) ... [2023-02-17 04:01:44,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 04:01:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:44,605 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) [2023-02-17 04:01:44,615 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 [2023-02-17 04:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-17 04:01:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-17 04:01:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:01:44,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:01:44,671 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:01:44,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:01:44,781 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:01:44,786 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:01:44,786 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 04:01:44,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:01:44 BoogieIcfgContainer [2023-02-17 04:01:44,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:01:44,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 04:01:44,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 04:01:44,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 04:01:44,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 04:01:44" (1/3) ... [2023-02-17 04:01:44,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24161b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:01:44, skipping insertion in model container [2023-02-17 04:01:44,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:01:44" (2/3) ... [2023-02-17 04:01:44,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24161b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 04:01:44, skipping insertion in model container [2023-02-17 04:01:44,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:01:44" (3/3) ... [2023-02-17 04:01:44,793 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-02-17 04:01:44,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 04:01:44,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-17 04:01:44,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 04:01:44,853 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;@13ab6818, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 04:01:44,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-17 04:01:44,856 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) [2023-02-17 04:01:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 04:01:44,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:44,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:44,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2023-02-17 04:01:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:44,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315269185] [2023-02-17 04:01:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:44,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:45,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315269185] [2023-02-17 04:01:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315269185] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:45,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:45,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:01:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152078318] [2023-02-17 04:01:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 04:01:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:01:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:01:45,125 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) [2023-02-17 04:01:45,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,228 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-17 04:01:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 04:01:45,230 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 [2023-02-17 04:01:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,234 INFO L225 Difference]: With dead ends: 65 [2023-02-17 04:01:45,235 INFO L226 Difference]: Without dead ends: 39 [2023-02-17 04:01:45,237 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 [2023-02-17 04:01:45,241 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:01:45,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 04:01:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-17 04:01:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-17 04:01:45,263 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) [2023-02-17 04:01:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-17 04:01:45,265 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-17 04:01:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,265 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-17 04:01:45,266 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) [2023-02-17 04:01:45,266 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-17 04:01:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 04:01:45,266 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 04:01:45,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2023-02-17 04:01:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242158359] [2023-02-17 04:01:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:45,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242158359] [2023-02-17 04:01:45,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242158359] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:45,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:45,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:01:45,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647751737] [2023-02-17 04:01:45,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 04:01:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:01:45,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:01:45,318 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) [2023-02-17 04:01:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,344 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-17 04:01:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:01:45,344 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 [2023-02-17 04:01:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,345 INFO L225 Difference]: With dead ends: 34 [2023-02-17 04:01:45,345 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 04:01:45,346 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 [2023-02-17 04:01:45,347 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 [2023-02-17 04:01:45,347 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] [2023-02-17 04:01:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 04:01:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-17 04:01:45,351 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) [2023-02-17 04:01:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-17 04:01:45,352 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-17 04:01:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,353 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-17 04:01:45,353 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) [2023-02-17 04:01:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-17 04:01:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 04:01:45,354 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 04:01:45,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash -114082075, now seen corresponding path program 1 times [2023-02-17 04:01:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031621602] [2023-02-17 04:01:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:45,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031621602] [2023-02-17 04:01:45,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031621602] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:45,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43669251] [2023-02-17 04:01:45,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:45,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:45,432 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) [2023-02-17 04:01:45,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 04:01:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:01:45,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:45,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:01:45,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43669251] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:45,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:45,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 04:01:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186761469] [2023-02-17 04:01:45,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 04:01:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 04:01:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-17 04:01:45,538 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) [2023-02-17 04:01:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,581 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-17 04:01:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 04:01:45,581 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 [2023-02-17 04:01:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,588 INFO L225 Difference]: With dead ends: 39 [2023-02-17 04:01:45,589 INFO L226 Difference]: Without dead ends: 38 [2023-02-17 04:01:45,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-17 04:01:45,590 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 [2023-02-17 04:01:45,591 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] [2023-02-17 04:01:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-17 04:01:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-17 04:01:45,596 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) [2023-02-17 04:01:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-17 04:01:45,597 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-17 04:01:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,597 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-17 04:01:45,598 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) [2023-02-17 04:01:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-17 04:01:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 04:01:45,598 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,598 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:45,804 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 [2023-02-17 04:01:45,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2023-02-17 04:01:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870241677] [2023-02-17 04:01:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:01:45,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870241677] [2023-02-17 04:01:45,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870241677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:45,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:45,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:01:45,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952729698] [2023-02-17 04:01:45,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 04:01:45,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 04:01:45,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 04:01:45,860 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) [2023-02-17 04:01:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,866 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-17 04:01:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 04:01:45,866 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 [2023-02-17 04:01:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,867 INFO L225 Difference]: With dead ends: 34 [2023-02-17 04:01:45,867 INFO L226 Difference]: Without dead ends: 33 [2023-02-17 04:01:45,867 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 [2023-02-17 04:01:45,868 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 [2023-02-17 04:01:45,868 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] [2023-02-17 04:01:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-17 04:01:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-17 04:01:45,871 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) [2023-02-17 04:01:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-17 04:01:45,872 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-17 04:01:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,872 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-17 04:01:45,872 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) [2023-02-17 04:01:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-17 04:01:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 04:01:45,873 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,873 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 04:01:45,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2023-02-17 04:01:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020432711] [2023-02-17 04:01:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:01:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020432711] [2023-02-17 04:01:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020432711] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:45,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:45,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:01:45,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249768436] [2023-02-17 04:01:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 04:01:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 04:01:45,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 04:01:45,904 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) [2023-02-17 04:01:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,909 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-17 04:01:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 04:01:45,910 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 [2023-02-17 04:01:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,910 INFO L225 Difference]: With dead ends: 31 [2023-02-17 04:01:45,910 INFO L226 Difference]: Without dead ends: 30 [2023-02-17 04:01:45,910 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 [2023-02-17 04:01:45,911 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 [2023-02-17 04:01:45,911 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] [2023-02-17 04:01:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-17 04:01:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-17 04:01:45,914 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) [2023-02-17 04:01:45,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-17 04:01:45,915 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-17 04:01:45,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,915 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-17 04:01:45,915 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) [2023-02-17 04:01:45,915 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-17 04:01:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 04:01:45,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,916 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 04:01:45,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,916 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2023-02-17 04:01:45,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972472330] [2023-02-17 04:01:45,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:01:45,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:45,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972472330] [2023-02-17 04:01:45,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972472330] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:45,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:45,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 04:01:45,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67971366] [2023-02-17 04:01:45,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:45,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 04:01:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:01:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:01:45,944 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) [2023-02-17 04:01:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:45,963 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-17 04:01:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:01:45,963 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 [2023-02-17 04:01:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:45,964 INFO L225 Difference]: With dead ends: 44 [2023-02-17 04:01:45,964 INFO L226 Difference]: Without dead ends: 41 [2023-02-17 04:01:45,964 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 [2023-02-17 04:01:45,965 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 [2023-02-17 04:01:45,965 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] [2023-02-17 04:01:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-17 04:01:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-17 04:01:45,968 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) [2023-02-17 04:01:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-17 04:01:45,969 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-17 04:01:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:45,969 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-17 04:01:45,969 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) [2023-02-17 04:01:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-17 04:01:45,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 04:01:45,970 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:45,970 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 04:01:45,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 468589560, now seen corresponding path program 1 times [2023-02-17 04:01:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616785499] [2023-02-17 04:01:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:01:46,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:46,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616785499] [2023-02-17 04:01:46,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616785499] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:46,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:01:46,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 04:01:46,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835895606] [2023-02-17 04:01:46,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:46,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 04:01:46,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:46,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:01:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:01:46,033 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) [2023-02-17 04:01:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:46,046 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-17 04:01:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:01:46,047 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 [2023-02-17 04:01:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:46,048 INFO L225 Difference]: With dead ends: 60 [2023-02-17 04:01:46,048 INFO L226 Difference]: Without dead ends: 38 [2023-02-17 04:01:46,048 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 [2023-02-17 04:01:46,049 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 [2023-02-17 04:01:46,049 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] [2023-02-17 04:01:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-17 04:01:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-17 04:01:46,053 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) [2023-02-17 04:01:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-17 04:01:46,054 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-17 04:01:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-17 04:01:46,054 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) [2023-02-17 04:01:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-17 04:01:46,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 04:01:46,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:46,055 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:46,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 04:01:46,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2023-02-17 04:01:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:46,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774187066] [2023-02-17 04:01:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 04:01:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774187066] [2023-02-17 04:01:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774187066] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:46,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424600770] [2023-02-17 04:01:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:46,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:46,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:46,280 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) [2023-02-17 04:01:46,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 04:01:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 04:01:46,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 04:01:46,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 04:01:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424600770] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:01:46,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 04:01:46,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-17 04:01:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147157870] [2023-02-17 04:01:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:01:46,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 04:01:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 04:01:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-17 04:01:46,343 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) [2023-02-17 04:01:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:46,363 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-17 04:01:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 04:01:46,364 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 [2023-02-17 04:01:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:46,365 INFO L225 Difference]: With dead ends: 38 [2023-02-17 04:01:46,365 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 04:01:46,365 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 [2023-02-17 04:01:46,366 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 [2023-02-17 04:01:46,366 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] [2023-02-17 04:01:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 04:01:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-17 04:01:46,370 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) [2023-02-17 04:01:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-17 04:01:46,371 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-17 04:01:46,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:46,371 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-17 04:01:46,372 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) [2023-02-17 04:01:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-17 04:01:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 04:01:46,372 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:46,373 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] [2023-02-17 04:01:46,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 04:01:46,583 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 [2023-02-17 04:01:46,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:46,584 INFO L85 PathProgramCache]: Analyzing trace with hash 255701234, now seen corresponding path program 1 times [2023-02-17 04:01:46,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:46,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190236760] [2023-02-17 04:01:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:46,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 04:01:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:46,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190236760] [2023-02-17 04:01:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190236760] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:46,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081378099] [2023-02-17 04:01:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:46,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:46,648 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) [2023-02-17 04:01:46,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 04:01:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:46,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 04:01:46,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 04:01:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 04:01:46,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081378099] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:46,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:46,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2023-02-17 04:01:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418495800] [2023-02-17 04:01:46,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:46,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 04:01:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 04:01:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-02-17 04:01:46,819 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) [2023-02-17 04:01:46,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:46,973 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2023-02-17 04:01:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 04:01:46,974 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 [2023-02-17 04:01:46,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:46,976 INFO L225 Difference]: With dead ends: 128 [2023-02-17 04:01:46,976 INFO L226 Difference]: Without dead ends: 91 [2023-02-17 04:01:46,976 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 [2023-02-17 04:01:46,977 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 [2023-02-17 04:01:46,977 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] [2023-02-17 04:01:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-17 04:01:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2023-02-17 04:01:46,984 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) [2023-02-17 04:01:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2023-02-17 04:01:46,985 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2023-02-17 04:01:46,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:46,985 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2023-02-17 04:01:46,986 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) [2023-02-17 04:01:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2023-02-17 04:01:46,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-17 04:01:46,987 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:46,987 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] [2023-02-17 04:01:47,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:47,192 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 [2023-02-17 04:01:47,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1292177225, now seen corresponding path program 2 times [2023-02-17 04:01:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:47,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274612023] [2023-02-17 04:01:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:47,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:47,622 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-17 04:01:47,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:47,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274612023] [2023-02-17 04:01:47,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274612023] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:47,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474384172] [2023-02-17 04:01:47,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:01:47,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:47,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:47,643 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) [2023-02-17 04:01:47,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 04:01:47,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:01:47,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:47,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 04:01:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-17 04:01:47,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-17 04:01:48,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474384172] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:48,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:48,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 21 [2023-02-17 04:01:48,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710136502] [2023-02-17 04:01:48,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:48,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 04:01:48,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:48,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 04:01:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-02-17 04:01:48,173 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) [2023-02-17 04:01:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:48,369 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2023-02-17 04:01:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-17 04:01:48,370 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 [2023-02-17 04:01:48,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:48,371 INFO L225 Difference]: With dead ends: 145 [2023-02-17 04:01:48,371 INFO L226 Difference]: Without dead ends: 87 [2023-02-17 04:01:48,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 144 SyntacticMatches, 25 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 04:01:48,376 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 [2023-02-17 04:01:48,377 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] [2023-02-17 04:01:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-17 04:01:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2023-02-17 04:01:48,392 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) [2023-02-17 04:01:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-02-17 04:01:48,394 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 82 [2023-02-17 04:01:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:48,396 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-02-17 04:01:48,396 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) [2023-02-17 04:01:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-02-17 04:01:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-02-17 04:01:48,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:48,399 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] [2023-02-17 04:01:48,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-17 04:01:48,604 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 [2023-02-17 04:01:48,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -375510631, now seen corresponding path program 3 times [2023-02-17 04:01:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351796967] [2023-02-17 04:01:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:01:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-17 04:01:48,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:48,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351796967] [2023-02-17 04:01:48,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351796967] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:48,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910488876] [2023-02-17 04:01:48,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 04:01:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:48,920 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) [2023-02-17 04:01:48,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 04:01:49,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-17 04:01:49,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 04:01:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-17 04:01:49,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-02-17 04:01:49,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910488876] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:49,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:49,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2023-02-17 04:01:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574483882] [2023-02-17 04:01:49,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:49,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 04:01:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:49,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 04:01:49,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2023-02-17 04:01:49,176 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) [2023-02-17 04:01:49,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:49,463 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2023-02-17 04:01:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-17 04:01:49,464 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 [2023-02-17 04:01:49,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:49,467 INFO L225 Difference]: With dead ends: 154 [2023-02-17 04:01:49,467 INFO L226 Difference]: Without dead ends: 133 [2023-02-17 04:01:49,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 04:01:49,470 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 [2023-02-17 04:01:49,470 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] [2023-02-17 04:01:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-17 04:01:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-02-17 04:01:49,489 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) [2023-02-17 04:01:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2023-02-17 04:01:49,490 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 98 [2023-02-17 04:01:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2023-02-17 04:01:49,491 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) [2023-02-17 04:01:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2023-02-17 04:01:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-02-17 04:01:49,496 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:49,496 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] [2023-02-17 04:01:49,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:49,701 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 [2023-02-17 04:01:49,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1162975598, now seen corresponding path program 4 times [2023-02-17 04:01:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:49,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788668252] [2023-02-17 04:01:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:01:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-02-17 04:01:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788668252] [2023-02-17 04:01:50,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788668252] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073410892] [2023-02-17 04:01:50,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:01:50,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:50,205 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) [2023-02-17 04:01:50,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 04:01:50,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:01:50,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:50,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 04:01:50,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 228 proven. 235 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-17 04:01:50,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 228 proven. 235 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-02-17 04:01:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073410892] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:50,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 41 [2023-02-17 04:01:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052198620] [2023-02-17 04:01:50,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-17 04:01:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-17 04:01:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1442, Unknown=0, NotChecked=0, Total=1722 [2023-02-17 04:01:50,586 INFO L87 Difference]: Start difference. First operand 127 states and 140 transitions. Second operand has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:01:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:51,573 INFO L93 Difference]: Finished difference Result 292 states and 329 transitions. [2023-02-17 04:01:51,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-17 04:01:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 133 [2023-02-17 04:01:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:51,575 INFO L225 Difference]: With dead ends: 292 [2023-02-17 04:01:51,575 INFO L226 Difference]: Without dead ends: 216 [2023-02-17 04:01:51,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2872, Invalid=9560, Unknown=0, NotChecked=0, Total=12432 [2023-02-17 04:01:51,581 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 251 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:01:51,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 233 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:01:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-17 04:01:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2023-02-17 04:01:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 186 states have (on average 1.1344086021505377) internal successors, (211), 186 states have internal predecessors, (211), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-17 04:01:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 224 transitions. [2023-02-17 04:01:51,593 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 224 transitions. Word has length 133 [2023-02-17 04:01:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:51,593 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 224 transitions. [2023-02-17 04:01:51,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5365853658536586) internal successors, (104), 34 states have internal predecessors, (104), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:01:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 224 transitions. [2023-02-17 04:01:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-02-17 04:01:51,596 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:51,596 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:51,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:51,802 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 [2023-02-17 04:01:51,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:51,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1027834391, now seen corresponding path program 5 times [2023-02-17 04:01:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:51,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893454256] [2023-02-17 04:01:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:51,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:53,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1379 proven. 180 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-02-17 04:01:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893454256] [2023-02-17 04:01:53,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893454256] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844961318] [2023-02-17 04:01:53,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:01:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:53,243 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) [2023-02-17 04:01:53,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 04:01:53,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-02-17 04:01:53,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:53,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-17 04:01:53,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1372 proven. 185 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-02-17 04:01:53,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 1385 proven. 172 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2023-02-17 04:01:53,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844961318] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:53,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:53,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 24] total 32 [2023-02-17 04:01:53,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821375748] [2023-02-17 04:01:53,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:53,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 04:01:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 04:01:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2023-02-17 04:01:53,874 INFO L87 Difference]: Start difference. First operand 199 states and 224 transitions. Second operand has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-17 04:01:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:54,340 INFO L93 Difference]: Finished difference Result 349 states and 396 transitions. [2023-02-17 04:01:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-17 04:01:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 210 [2023-02-17 04:01:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:54,341 INFO L225 Difference]: With dead ends: 349 [2023-02-17 04:01:54,341 INFO L226 Difference]: Without dead ends: 204 [2023-02-17 04:01:54,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 400 SyntacticMatches, 40 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=2993, Unknown=0, NotChecked=0, Total=3540 [2023-02-17 04:01:54,343 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 43 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:01:54,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 415 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:01:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-02-17 04:01:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-02-17 04:01:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 189 states have (on average 1.08994708994709) internal successors, (206), 189 states have internal predecessors, (206), 3 states have call successors, (3), 2 states have call predecessors, (3), 9 states have return successors, (10), 10 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-17 04:01:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 219 transitions. [2023-02-17 04:01:54,351 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 219 transitions. Word has length 210 [2023-02-17 04:01:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:54,351 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 219 transitions. [2023-02-17 04:01:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.59375) internal successors, (83), 26 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-17 04:01:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 219 transitions. [2023-02-17 04:01:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-02-17 04:01:54,353 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:54,353 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:54,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:54,558 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 [2023-02-17 04:01:54,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1662975466, now seen corresponding path program 6 times [2023-02-17 04:01:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:54,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322486200] [2023-02-17 04:01:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:01:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1219 proven. 781 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2023-02-17 04:01:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:55,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322486200] [2023-02-17 04:01:55,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322486200] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:55,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705765217] [2023-02-17 04:01:55,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 04:01:55,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:55,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:55,709 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) [2023-02-17 04:01:55,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 04:01:55,826 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-02-17 04:01:55,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:01:55,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 04:01:55,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 718 proven. 70 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-17 04:01:56,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:01:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 718 proven. 70 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2023-02-17 04:01:56,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705765217] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:01:56,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:01:56,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 17, 17] total 68 [2023-02-17 04:01:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869915357] [2023-02-17 04:01:56,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:01:56,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-02-17 04:01:56,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:01:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-02-17 04:01:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=3910, Unknown=0, NotChecked=0, Total=4556 [2023-02-17 04:01:56,559 INFO L87 Difference]: Start difference. First operand 202 states and 219 transitions. Second operand has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:01:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:01:57,453 INFO L93 Difference]: Finished difference Result 520 states and 590 transitions. [2023-02-17 04:01:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-17 04:01:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 213 [2023-02-17 04:01:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:01:57,457 INFO L225 Difference]: With dead ends: 520 [2023-02-17 04:01:57,458 INFO L226 Difference]: Without dead ends: 338 [2023-02-17 04:01:57,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5966 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4000, Invalid=14632, Unknown=0, NotChecked=0, Total=18632 [2023-02-17 04:01:57,466 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 554 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:01:57,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 268 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:01:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-02-17 04:01:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2023-02-17 04:01:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 260 states have (on average 1.0807692307692307) internal successors, (281), 260 states have internal predecessors, (281), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-17 04:01:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 295 transitions. [2023-02-17 04:01:57,478 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 295 transitions. Word has length 213 [2023-02-17 04:01:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:01:57,478 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 295 transitions. [2023-02-17 04:01:57,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.088235294117647) internal successors, (142), 61 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:01:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 295 transitions. [2023-02-17 04:01:57,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-02-17 04:01:57,480 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:01:57,480 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-17 04:01:57,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 04:01:57,686 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 [2023-02-17 04:01:57,687 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:01:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:01:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash 87007117, now seen corresponding path program 7 times [2023-02-17 04:01:57,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:01:57,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508448616] [2023-02-17 04:01:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:01:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:01:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:01:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:58,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:01:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3094 proven. 823 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-17 04:01:59,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:01:59,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508448616] [2023-02-17 04:01:59,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508448616] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:01:59,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622962952] [2023-02-17 04:01:59,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 04:01:59,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:01:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:01:59,300 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) [2023-02-17 04:01:59,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 04:01:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:01:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-17 04:01:59,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:01:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3167 proven. 750 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-17 04:01:59,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3167 proven. 750 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-17 04:02:00,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622962952] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:00,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:00,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2023-02-17 04:02:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818993229] [2023-02-17 04:02:00,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:00,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-17 04:02:00,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-17 04:02:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1829, Unknown=0, NotChecked=0, Total=2070 [2023-02-17 04:02:00,670 INFO L87 Difference]: Start difference. First operand 274 states and 295 transitions. Second operand has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-17 04:02:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:01,778 INFO L93 Difference]: Finished difference Result 458 states and 500 transitions. [2023-02-17 04:02:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-17 04:02:01,779 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 276 [2023-02-17 04:02:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:01,780 INFO L225 Difference]: With dead ends: 458 [2023-02-17 04:02:01,780 INFO L226 Difference]: Without dead ends: 277 [2023-02-17 04:02:01,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 492 SyntacticMatches, 78 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4049 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1887, Invalid=9033, Unknown=0, NotChecked=0, Total=10920 [2023-02-17 04:02:01,784 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 36 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:01,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 434 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 04:02:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-02-17 04:02:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-02-17 04:02:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 263 states have (on average 1.049429657794677) internal successors, (276), 263 states have internal predecessors, (276), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-17 04:02:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 290 transitions. [2023-02-17 04:02:01,793 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 290 transitions. Word has length 276 [2023-02-17 04:02:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:01,794 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 290 transitions. [2023-02-17 04:02:01,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 36 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-17 04:02:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 290 transitions. [2023-02-17 04:02:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-02-17 04:02:01,796 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:01,796 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:01,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-17 04:02:02,001 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 [2023-02-17 04:02:02,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1463903246, now seen corresponding path program 8 times [2023-02-17 04:02:02,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:02,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427435985] [2023-02-17 04:02:02,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:02,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:02:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 1638 proven. 2172 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2023-02-17 04:02:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:02,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427435985] [2023-02-17 04:02:02,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427435985] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:02,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753740938] [2023-02-17 04:02:02,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:02:02,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:03,001 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) [2023-02-17 04:02:03,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 04:02:03,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:02:03,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:02:03,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 04:02:03,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 3987 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-02-17 04:02:03,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 3987 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2023-02-17 04:02:04,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753740938] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:04,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:04,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31, 31] total 73 [2023-02-17 04:02:04,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666036551] [2023-02-17 04:02:04,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:04,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-02-17 04:02:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:04,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-02-17 04:02:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=4644, Unknown=0, NotChecked=0, Total=5402 [2023-02-17 04:02:04,108 INFO L87 Difference]: Start difference. First operand 277 states and 290 transitions. Second operand has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-17 04:02:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:07,496 INFO L93 Difference]: Finished difference Result 1402 states and 1535 transitions. [2023-02-17 04:02:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-02-17 04:02:07,497 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 279 [2023-02-17 04:02:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:07,499 INFO L225 Difference]: With dead ends: 1402 [2023-02-17 04:02:07,499 INFO L226 Difference]: Without dead ends: 862 [2023-02-17 04:02:07,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 526 SyntacticMatches, 4 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39079 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=14322, Invalid=67760, Unknown=0, NotChecked=0, Total=82082 [2023-02-17 04:02:07,508 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 561 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:07,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 231 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 04:02:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-02-17 04:02:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 607. [2023-02-17 04:02:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 582 states have (on average 1.041237113402062) internal successors, (606), 582 states have internal predecessors, (606), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-02-17 04:02:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 631 transitions. [2023-02-17 04:02:07,531 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 631 transitions. Word has length 279 [2023-02-17 04:02:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:07,531 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 631 transitions. [2023-02-17 04:02:07,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.6164383561643834) internal successors, (191), 54 states have internal predecessors, (191), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-17 04:02:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 631 transitions. [2023-02-17 04:02:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2023-02-17 04:02:07,540 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:07,540 INFO L195 NwaCegarLoop]: trace histogram [139, 139, 139, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:07,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 04:02:07,745 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 [2023-02-17 04:02:07,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:07,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:07,746 INFO L85 PathProgramCache]: Analyzing trace with hash 790364249, now seen corresponding path program 9 times [2023-02-17 04:02:07,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:07,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533804652] [2023-02-17 04:02:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:07,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:02:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:10,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 12034 proven. 336 refuted. 0 times theorem prover too weak. 21893 trivial. 0 not checked. [2023-02-17 04:02:11,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:11,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533804652] [2023-02-17 04:02:11,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533804652] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:11,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835172452] [2023-02-17 04:02:11,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 04:02:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:11,347 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) [2023-02-17 04:02:11,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 04:02:11,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-17 04:02:11,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:02:11,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 04:02:11,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 8847 proven. 478 refuted. 0 times theorem prover too weak. 24938 trivial. 0 not checked. [2023-02-17 04:02:12,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34263 backedges. 8847 proven. 478 refuted. 0 times theorem prover too weak. 24938 trivial. 0 not checked. [2023-02-17 04:02:12,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835172452] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:12,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:12,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 79 [2023-02-17 04:02:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887182296] [2023-02-17 04:02:12,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:12,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-02-17 04:02:12,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-02-17 04:02:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=5439, Unknown=0, NotChecked=0, Total=6162 [2023-02-17 04:02:12,689 INFO L87 Difference]: Start difference. First operand 607 states and 631 transitions. Second operand has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 04:02:15,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:15,666 INFO L93 Difference]: Finished difference Result 2253 states and 2543 transitions. [2023-02-17 04:02:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-02-17 04:02:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 664 [2023-02-17 04:02:15,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:15,672 INFO L225 Difference]: With dead ends: 2253 [2023-02-17 04:02:15,672 INFO L226 Difference]: Without dead ends: 1763 [2023-02-17 04:02:15,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1330 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11791 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5766, Invalid=37290, Unknown=0, NotChecked=0, Total=43056 [2023-02-17 04:02:15,680 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1029 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:15,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 688 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 04:02:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2023-02-17 04:02:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 687. [2023-02-17 04:02:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 661 states have (on average 1.0514372163388805) internal successors, (695), 661 states have internal predecessors, (695), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-17 04:02:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 721 transitions. [2023-02-17 04:02:15,748 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 721 transitions. Word has length 664 [2023-02-17 04:02:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:15,748 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 721 transitions. [2023-02-17 04:02:15,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.9240506329113924) internal successors, (152), 76 states have internal predecessors, (152), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-17 04:02:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 721 transitions. [2023-02-17 04:02:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-02-17 04:02:15,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:15,754 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 160, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:15,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 04:02:15,959 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 [2023-02-17 04:02:15,959 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash 753281782, now seen corresponding path program 10 times [2023-02-17 04:02:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:15,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057407899] [2023-02-17 04:02:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:02:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:19,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 20562 proven. 420 refuted. 0 times theorem prover too weak. 23109 trivial. 0 not checked. [2023-02-17 04:02:20,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:20,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057407899] [2023-02-17 04:02:20,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057407899] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:20,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183789775] [2023-02-17 04:02:20,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:02:20,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:20,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:20,245 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) [2023-02-17 04:02:20,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 04:02:20,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:02:20,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:02:20,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 04:02:20,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 22609 proven. 404 refuted. 0 times theorem prover too weak. 21078 trivial. 0 not checked. [2023-02-17 04:02:21,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 44091 backedges. 22634 proven. 379 refuted. 0 times theorem prover too weak. 21078 trivial. 0 not checked. [2023-02-17 04:02:22,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183789775] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:22,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:22,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2023-02-17 04:02:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002033236] [2023-02-17 04:02:22,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-02-17 04:02:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-02-17 04:02:22,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3291, Unknown=0, NotChecked=0, Total=3782 [2023-02-17 04:02:22,019 INFO L87 Difference]: Start difference. First operand 687 states and 721 transitions. Second operand has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 04:02:22,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:22,971 INFO L93 Difference]: Finished difference Result 1310 states and 1387 transitions. [2023-02-17 04:02:22,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-17 04:02:22,971 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 727 [2023-02-17 04:02:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:22,974 INFO L225 Difference]: With dead ends: 1310 [2023-02-17 04:02:22,974 INFO L226 Difference]: Without dead ends: 808 [2023-02-17 04:02:22,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1428 SyntacticMatches, 50 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1742, Invalid=7960, Unknown=0, NotChecked=0, Total=9702 [2023-02-17 04:02:22,977 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 150 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:22,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 627 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 04:02:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-02-17 04:02:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 758. [2023-02-17 04:02:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 730 states have (on average 1.0465753424657533) internal successors, (764), 730 states have internal predecessors, (764), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-17 04:02:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 792 transitions. [2023-02-17 04:02:23,013 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 792 transitions. Word has length 727 [2023-02-17 04:02:23,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:23,013 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 792 transitions. [2023-02-17 04:02:23,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.935483870967742) internal successors, (120), 61 states have internal predecessors, (120), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 04:02:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 792 transitions. [2023-02-17 04:02:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-02-17 04:02:23,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:23,018 INFO L195 NwaCegarLoop]: trace histogram [169, 169, 169, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:23,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 04:02:23,224 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 [2023-02-17 04:02:23,225 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:23,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:23,225 INFO L85 PathProgramCache]: Analyzing trace with hash 888670905, now seen corresponding path program 11 times [2023-02-17 04:02:23,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411280122] [2023-02-17 04:02:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:23,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:02:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:26,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 22636 proven. 513 refuted. 0 times theorem prover too weak. 25340 trivial. 0 not checked. [2023-02-17 04:02:27,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411280122] [2023-02-17 04:02:27,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411280122] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:27,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158016537] [2023-02-17 04:02:27,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:02:27,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:27,631 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) [2023-02-17 04:02:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 04:02:27,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-02-17 04:02:27,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:02:27,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-17 04:02:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 27198 proven. 2024 refuted. 0 times theorem prover too weak. 19267 trivial. 0 not checked. [2023-02-17 04:02:28,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 48489 backedges. 27782 proven. 1440 refuted. 0 times theorem prover too weak. 19267 trivial. 0 not checked. [2023-02-17 04:02:31,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158016537] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:31,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:31,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 49, 49] total 72 [2023-02-17 04:02:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498054601] [2023-02-17 04:02:31,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-17 04:02:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-17 04:02:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=4539, Unknown=0, NotChecked=0, Total=5112 [2023-02-17 04:02:31,375 INFO L87 Difference]: Start difference. First operand 758 states and 792 transitions. Second operand has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-17 04:02:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:34,033 INFO L93 Difference]: Finished difference Result 1481 states and 1557 transitions. [2023-02-17 04:02:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-02-17 04:02:34,034 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 744 [2023-02-17 04:02:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:34,041 INFO L225 Difference]: With dead ends: 1481 [2023-02-17 04:02:34,041 INFO L226 Difference]: Without dead ends: 949 [2023-02-17 04:02:34,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1443 SyntacticMatches, 63 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10796 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5039, Invalid=27181, Unknown=0, NotChecked=0, Total=32220 [2023-02-17 04:02:34,048 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 167 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 3902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:34,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 740 Invalid, 3902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-17 04:02:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-02-17 04:02:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 865. [2023-02-17 04:02:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 834 states have (on average 1.0419664268585132) internal successors, (869), 834 states have internal predecessors, (869), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2023-02-17 04:02:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 900 transitions. [2023-02-17 04:02:34,100 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 900 transitions. Word has length 744 [2023-02-17 04:02:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:34,101 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 900 transitions. [2023-02-17 04:02:34,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.0833333333333335) internal successors, (150), 67 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-17 04:02:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 900 transitions. [2023-02-17 04:02:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-02-17 04:02:34,106 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:34,106 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 177, 24, 23, 23, 23, 23, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:34,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-17 04:02:34,312 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 [2023-02-17 04:02:34,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 95625241, now seen corresponding path program 12 times [2023-02-17 04:02:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:34,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405096486] [2023-02-17 04:02:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:35,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:02:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 24625 proven. 615 refuted. 0 times theorem prover too weak. 27776 trivial. 0 not checked. [2023-02-17 04:02:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:39,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405096486] [2023-02-17 04:02:39,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405096486] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:39,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276087224] [2023-02-17 04:02:39,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 04:02:39,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:39,151 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) [2023-02-17 04:02:39,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 04:02:39,952 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2023-02-17 04:02:39,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:02:39,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 04:02:39,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 19302 proven. 2267 refuted. 0 times theorem prover too weak. 31447 trivial. 0 not checked. [2023-02-17 04:02:40,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:02:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 53016 backedges. 19302 proven. 2267 refuted. 0 times theorem prover too weak. 31447 trivial. 0 not checked. [2023-02-17 04:02:41,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276087224] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:02:41,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:02:41,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 31, 31] total 109 [2023-02-17 04:02:41,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793308819] [2023-02-17 04:02:41,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:02:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-02-17 04:02:41,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:02:41,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-02-17 04:02:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1260, Invalid=10512, Unknown=0, NotChecked=0, Total=11772 [2023-02-17 04:02:41,840 INFO L87 Difference]: Start difference. First operand 865 states and 900 transitions. Second operand has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-17 04:02:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:02:47,251 INFO L93 Difference]: Finished difference Result 4298 states and 4819 transitions. [2023-02-17 04:02:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-02-17 04:02:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 778 [2023-02-17 04:02:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:02:47,260 INFO L225 Difference]: With dead ends: 4298 [2023-02-17 04:02:47,260 INFO L226 Difference]: Without dead ends: 3588 [2023-02-17 04:02:47,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1896 GetRequests, 1541 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40022 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15011, Invalid=112081, Unknown=0, NotChecked=0, Total=127092 [2023-02-17 04:02:47,269 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1513 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 04:02:47,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 809 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 04:02:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2023-02-17 04:02:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 1101. [2023-02-17 04:02:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1066 states have (on average 1.0562851782363978) internal successors, (1126), 1066 states have internal predecessors, (1126), 3 states have call successors, (3), 2 states have call predecessors, (3), 31 states have return successors, (32), 32 states have call predecessors, (32), 2 states have call successors, (32) [2023-02-17 04:02:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1161 transitions. [2023-02-17 04:02:47,358 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1161 transitions. Word has length 778 [2023-02-17 04:02:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:02:47,359 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1161 transitions. [2023-02-17 04:02:47,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 1.871559633027523) internal successors, (204), 104 states have internal predecessors, (204), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-17 04:02:47,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1161 transitions. [2023-02-17 04:02:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2023-02-17 04:02:47,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:02:47,365 INFO L195 NwaCegarLoop]: trace histogram [207, 207, 207, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:02:47,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 04:02:47,574 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 [2023-02-17 04:02:47,575 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:02:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:02:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1747326729, now seen corresponding path program 13 times [2023-02-17 04:02:47,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:02:47,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663934862] [2023-02-17 04:02:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:02:47,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:02:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:02:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:02:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 39660 proven. 726 refuted. 0 times theorem prover too weak. 30276 trivial. 0 not checked. [2023-02-17 04:02:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:02:54,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663934862] [2023-02-17 04:02:54,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663934862] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:02:54,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141049373] [2023-02-17 04:02:54,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 04:02:54,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:02:54,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:02:54,388 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) [2023-02-17 04:02:54,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 04:02:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:02:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-17 04:02:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:02:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 44052 proven. 3265 refuted. 0 times theorem prover too weak. 23345 trivial. 0 not checked. [2023-02-17 04:02:56,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:03:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 70662 backedges. 44052 proven. 3265 refuted. 0 times theorem prover too weak. 23345 trivial. 0 not checked. [2023-02-17 04:03:01,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141049373] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:03:01,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:03:01,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2023-02-17 04:03:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747425566] [2023-02-17 04:03:01,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:03:01,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-02-17 04:03:01,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:03:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-02-17 04:03:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2023-02-17 04:03:01,632 INFO L87 Difference]: Start difference. First operand 1101 states and 1161 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-17 04:03:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:03:08,213 INFO L93 Difference]: Finished difference Result 2144 states and 2266 transitions. [2023-02-17 04:03:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-02-17 04:03:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 858 [2023-02-17 04:03:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:03:08,217 INFO L225 Difference]: With dead ends: 2144 [2023-02-17 04:03:08,217 INFO L226 Difference]: Without dead ends: 1465 [2023-02-17 04:03:08,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2018 GetRequests, 1630 SyntacticMatches, 92 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34510 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2023-02-17 04:03:08,225 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 161 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 7443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 7460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 7443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 04:03:08,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 771 Invalid, 7460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 7443 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 04:03:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-02-17 04:03:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1295. [2023-02-17 04:03:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1255 states have (on average 1.049402390438247) internal successors, (1317), 1255 states have internal predecessors, (1317), 3 states have call successors, (3), 2 states have call predecessors, (3), 36 states have return successors, (37), 37 states have call predecessors, (37), 2 states have call successors, (37) [2023-02-17 04:03:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1357 transitions. [2023-02-17 04:03:08,343 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1357 transitions. Word has length 858 [2023-02-17 04:03:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:03:08,344 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1357 transitions. [2023-02-17 04:03:08,344 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) [2023-02-17 04:03:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1357 transitions. [2023-02-17 04:03:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2023-02-17 04:03:08,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:03:08,352 INFO L195 NwaCegarLoop]: trace histogram [212, 212, 212, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:03:08,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 04:03:08,562 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 [2023-02-17 04:03:08,562 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:03:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:03:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash -404731690, now seen corresponding path program 14 times [2023-02-17 04:03:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:03:08,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330916954] [2023-02-17 04:03:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:03:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:03:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:03:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:15,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 41697 proven. 846 refuted. 0 times theorem prover too weak. 31359 trivial. 0 not checked. [2023-02-17 04:03:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:03:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330916954] [2023-02-17 04:03:16,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330916954] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:03:16,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899729491] [2023-02-17 04:03:16,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:03:16,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:03:16,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:03:16,745 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) [2023-02-17 04:03:16,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 04:03:18,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:03:18,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:03:18,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-17 04:03:18,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:03:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 49460 proven. 4083 refuted. 0 times theorem prover too weak. 20359 trivial. 0 not checked. [2023-02-17 04:03:19,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:03:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 73902 backedges. 49460 proven. 4083 refuted. 0 times theorem prover too weak. 20359 trivial. 0 not checked. [2023-02-17 04:03:25,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899729491] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:03:25,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:03:25,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 73, 73] total 100 [2023-02-17 04:03:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20578703] [2023-02-17 04:03:25,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:03:25,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-17 04:03:25,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:03:25,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-17 04:03:25,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=845, Invalid=9055, Unknown=0, NotChecked=0, Total=9900 [2023-02-17 04:03:25,257 INFO L87 Difference]: Start difference. First operand 1295 states and 1357 transitions. Second operand has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-02-17 04:03:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:03:32,089 INFO L93 Difference]: Finished difference Result 2471 states and 2593 transitions. [2023-02-17 04:03:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2023-02-17 04:03:32,091 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) Word has length 873 [2023-02-17 04:03:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:03:32,095 INFO L225 Difference]: With dead ends: 2471 [2023-02-17 04:03:32,095 INFO L226 Difference]: Without dead ends: 1765 [2023-02-17 04:03:32,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 1650 SyntacticMatches, 99 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43329 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=13613, Invalid=98277, Unknown=0, NotChecked=0, Total=111890 [2023-02-17 04:03:32,109 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 169 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 7861 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 7880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-17 04:03:32,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 822 Invalid, 7880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7861 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-17 04:03:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2023-02-17 04:03:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1543. [2023-02-17 04:03:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1497 states have (on average 1.0434201736806947) internal successors, (1562), 1497 states have internal predecessors, (1562), 3 states have call successors, (3), 2 states have call predecessors, (3), 42 states have return successors, (43), 43 states have call predecessors, (43), 2 states have call successors, (43) [2023-02-17 04:03:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1608 transitions. [2023-02-17 04:03:32,266 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1608 transitions. Word has length 873 [2023-02-17 04:03:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:03:32,266 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1608 transitions. [2023-02-17 04:03:32,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.19) internal successors, (219), 85 states have internal predecessors, (219), 1 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 1 states have call successors, (17) [2023-02-17 04:03:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1608 transitions. [2023-02-17 04:03:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2023-02-17 04:03:32,274 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:03:32,274 INFO L195 NwaCegarLoop]: trace histogram [216, 216, 216, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:03:32,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-17 04:03:32,487 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 [2023-02-17 04:03:32,488 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:03:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:03:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1697460042, now seen corresponding path program 15 times [2023-02-17 04:03:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:03:32,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738110447] [2023-02-17 04:03:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:03:32,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:03:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:34,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:03:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:40,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:03:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:03:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 43477 proven. 975 refuted. 0 times theorem prover too weak. 32096 trivial. 0 not checked. [2023-02-17 04:03:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:03:41,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738110447] [2023-02-17 04:03:41,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738110447] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:03:41,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996825324] [2023-02-17 04:03:41,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 04:03:41,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:03:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:03:41,211 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) [2023-02-17 04:03:41,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 04:03:43,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-02-17 04:03:43,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:03:43,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 04:03:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:03:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 35426 proven. 8222 refuted. 0 times theorem prover too weak. 32900 trivial. 0 not checked. [2023-02-17 04:03:44,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:03:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 76548 backedges. 35426 proven. 8222 refuted. 0 times theorem prover too weak. 32900 trivial. 0 not checked. [2023-02-17 04:03:46,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996825324] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:03:46,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:03:46,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 40, 40] total 139 [2023-02-17 04:03:46,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144342880] [2023-02-17 04:03:46,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:03:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2023-02-17 04:03:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:03:46,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2023-02-17 04:03:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1947, Invalid=17235, Unknown=0, NotChecked=0, Total=19182 [2023-02-17 04:03:46,543 INFO L87 Difference]: Start difference. First operand 1543 states and 1608 transitions. Second operand has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:03:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:03:59,664 INFO L93 Difference]: Finished difference Result 7396 states and 8171 transitions. [2023-02-17 04:03:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 409 states. [2023-02-17 04:03:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 885 [2023-02-17 04:03:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:03:59,682 INFO L225 Difference]: With dead ends: 7396 [2023-02-17 04:03:59,683 INFO L226 Difference]: Without dead ends: 6388 [2023-02-17 04:03:59,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2278 GetRequests, 1738 SyntacticMatches, 0 SemanticMatches, 540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100389 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=31240, Invalid=261982, Unknown=0, NotChecked=0, Total=293222 [2023-02-17 04:03:59,709 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3771 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 3868 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 3868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 04:03:59,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 1216 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 3868 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 04:03:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2023-02-17 04:04:00,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 2008. [2023-02-17 04:04:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1955 states have (on average 1.0521739130434782) internal successors, (2057), 1955 states have internal predecessors, (2057), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2023-02-17 04:04:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2110 transitions. [2023-02-17 04:04:00,015 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2110 transitions. Word has length 885 [2023-02-17 04:04:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:04:00,015 INFO L495 AbstractCegarLoop]: Abstraction has 2008 states and 2110 transitions. [2023-02-17 04:04:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 1.841726618705036) internal successors, (256), 132 states have internal predecessors, (256), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-17 04:04:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2110 transitions. [2023-02-17 04:04:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2023-02-17 04:04:00,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:04:00,025 INFO L195 NwaCegarLoop]: trace histogram [252, 252, 252, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1] [2023-02-17 04:04:00,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 04:04:00,257 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 [2023-02-17 04:04:00,258 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:04:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:04:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1424439126, now seen corresponding path program 16 times [2023-02-17 04:04:00,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:04:00,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095587737] [2023-02-17 04:04:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:04:00,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:04:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 04:04:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:10,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:14,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 49943 proven. 17127 refuted. 0 times theorem prover too weak. 35452 trivial. 0 not checked. [2023-02-17 04:04:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:04:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095587737] [2023-02-17 04:04:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095587737] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:04:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273998766] [2023-02-17 04:04:17,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:04:17,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:04:17,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:04:17,485 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) [2023-02-17 04:04:17,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 04:04:19,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:04:19,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:04:19,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 65 conjunts are in the unsatisfiable core [2023-02-17 04:04:19,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:04:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 60873 proven. 1079 refuted. 0 times theorem prover too weak. 40570 trivial. 0 not checked. [2023-02-17 04:04:21,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:04:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 102522 backedges. 60916 proven. 1036 refuted. 0 times theorem prover too weak. 40570 trivial. 0 not checked. [2023-02-17 04:04:26,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273998766] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:04:26,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:04:26,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 65, 65] total 167 [2023-02-17 04:04:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396158646] [2023-02-17 04:04:26,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:04:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-02-17 04:04:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:04:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-02-17 04:04:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1899, Invalid=25823, Unknown=0, NotChecked=0, Total=27722 [2023-02-17 04:04:26,353 INFO L87 Difference]: Start difference. First operand 2008 states and 2110 transitions. Second operand has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-17 04:04:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:04:33,901 INFO L93 Difference]: Finished difference Result 2633 states and 2802 transitions. [2023-02-17 04:04:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2023-02-17 04:04:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 993 [2023-02-17 04:04:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:04:33,904 INFO L225 Difference]: With dead ends: 2633 [2023-02-17 04:04:33,905 INFO L226 Difference]: Without dead ends: 1042 [2023-02-17 04:04:33,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2395 GetRequests, 1909 SyntacticMatches, 34 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79377 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=22213, Invalid=183449, Unknown=0, NotChecked=0, Total=205662 [2023-02-17 04:04:33,918 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1408 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 5104 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 5186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-17 04:04:33,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 972 Invalid, 5186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 5104 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-17 04:04:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2023-02-17 04:04:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1042. [2023-02-17 04:04:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1016 states have (on average 1.061023622047244) internal successors, (1078), 1016 states have internal predecessors, (1078), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-17 04:04:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1104 transitions. [2023-02-17 04:04:34,043 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1104 transitions. Word has length 993 [2023-02-17 04:04:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:04:34,045 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1104 transitions. [2023-02-17 04:04:34,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 1.9221556886227544) internal successors, (321), 151 states have internal predecessors, (321), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2023-02-17 04:04:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1104 transitions. [2023-02-17 04:04:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2023-02-17 04:04:34,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:04:34,053 INFO L195 NwaCegarLoop]: trace histogram [268, 268, 268, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-17 04:04:34,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-17 04:04:34,266 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 [2023-02-17 04:04:34,266 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:04:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:04:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash -47892643, now seen corresponding path program 17 times [2023-02-17 04:04:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:04:34,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640233163] [2023-02-17 04:04:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:04:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:04:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:04:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:42,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:04:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:04:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 84782 proven. 7140 refuted. 0 times theorem prover too weak. 24122 trivial. 0 not checked. [2023-02-17 04:04:55,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:04:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640233163] [2023-02-17 04:04:55,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640233163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:04:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959512649] [2023-02-17 04:04:55,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 04:04:55,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:04:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:04:55,935 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) [2023-02-17 04:04:55,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 04:04:58,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2023-02-17 04:04:58,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:04:58,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-17 04:04:58,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:04:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 83808 proven. 8087 refuted. 0 times theorem prover too weak. 24149 trivial. 0 not checked. [2023-02-17 04:04:59,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:05:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 116044 backedges. 84764 proven. 7131 refuted. 0 times theorem prover too weak. 24149 trivial. 0 not checked. [2023-02-17 04:05:05,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959512649] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:05:05,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:05:05,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 82, 82] total 100 [2023-02-17 04:05:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18467175] [2023-02-17 04:05:05,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:05:05,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-17 04:05:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:05:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-17 04:05:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=8891, Unknown=0, NotChecked=0, Total=9900 [2023-02-17 04:05:05,423 INFO L87 Difference]: Start difference. First operand 1042 states and 1104 transitions. Second operand has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-17 04:05:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:05:18,023 INFO L93 Difference]: Finished difference Result 1511 states and 1632 transitions. [2023-02-17 04:05:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 334 states. [2023-02-17 04:05:18,023 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 1062 [2023-02-17 04:05:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:05:18,026 INFO L225 Difference]: With dead ends: 1511 [2023-02-17 04:05:18,027 INFO L226 Difference]: Without dead ends: 1045 [2023-02-17 04:05:18,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2571 GetRequests, 2013 SyntacticMatches, 148 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54902 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=30719, Invalid=138613, Unknown=0, NotChecked=0, Total=169332 [2023-02-17 04:05:18,041 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 113 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 5760 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 5760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-17 04:05:18,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1101 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 5760 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-17 04:05:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-02-17 04:05:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1045. [2023-02-17 04:05:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1019 states have (on average 1.056918547595682) internal successors, (1077), 1019 states have internal predecessors, (1077), 3 states have call successors, (3), 2 states have call predecessors, (3), 22 states have return successors, (23), 23 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-17 04:05:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1103 transitions. [2023-02-17 04:05:18,172 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1103 transitions. Word has length 1062 [2023-02-17 04:05:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:05:18,173 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1103 transitions. [2023-02-17 04:05:18,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.3) internal successors, (230), 82 states have internal predecessors, (230), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-17 04:05:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1103 transitions. [2023-02-17 04:05:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2023-02-17 04:05:18,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:05:18,181 INFO L195 NwaCegarLoop]: trace histogram [269, 269, 269, 25, 24, 24, 24, 24, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1] [2023-02-17 04:05:18,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-17 04:05:18,399 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 [2023-02-17 04:05:18,400 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:05:18,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:05:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash 599632210, now seen corresponding path program 18 times [2023-02-17 04:05:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:05:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784035444] [2023-02-17 04:05:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:05:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:05:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:22,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-17 04:05:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:35,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:38,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-17 04:05:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:05:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 53446 proven. 44818 refuted. 0 times theorem prover too weak. 18606 trivial. 0 not checked. [2023-02-17 04:05:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:05:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784035444] [2023-02-17 04:05:39,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784035444] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:05:39,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165315968] [2023-02-17 04:05:39,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 04:05:39,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:05:39,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:05:39,293 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) [2023-02-17 04:05:39,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 04:05:42,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2023-02-17 04:05:42,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:05:42,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 61 conjunts are in the unsatisfiable core [2023-02-17 04:05:42,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:05:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 21792 proven. 1247 refuted. 0 times theorem prover too weak. 93831 trivial. 0 not checked. [2023-02-17 04:05:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:05:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 116870 backedges. 21792 proven. 1247 refuted. 0 times theorem prover too weak. 93831 trivial. 0 not checked. [2023-02-17 04:05:47,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165315968] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:05:47,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:05:47,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 61, 61] total 215 [2023-02-17 04:05:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73113308] [2023-02-17 04:05:47,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:05:47,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-02-17 04:05:47,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:05:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-02-17 04:05:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6032, Invalid=39978, Unknown=0, NotChecked=0, Total=46010 [2023-02-17 04:05:47,661 INFO L87 Difference]: Start difference. First operand 1045 states and 1103 transitions. Second operand has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-17 04:06:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:06:03,394 INFO L93 Difference]: Finished difference Result 2201 states and 2471 transitions. [2023-02-17 04:06:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 531 states. [2023-02-17 04:06:03,395 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 1065 [2023-02-17 04:06:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 04:06:03,399 INFO L225 Difference]: With dead ends: 2201 [2023-02-17 04:06:03,399 INFO L226 Difference]: Without dead ends: 1617 [2023-02-17 04:06:03,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2718 GetRequests, 2057 SyntacticMatches, 0 SemanticMatches, 661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167801 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=95011, Invalid=343895, Unknown=0, NotChecked=0, Total=438906 [2023-02-17 04:06:03,426 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4061 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 04:06:03,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4061 Valid, 416 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 04:06:03,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2023-02-17 04:06:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1285. [2023-02-17 04:06:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1258 states have (on average 1.068362480127186) internal successors, (1344), 1258 states have internal predecessors, (1344), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2023-02-17 04:06:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1371 transitions. [2023-02-17 04:06:03,647 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1371 transitions. Word has length 1065 [2023-02-17 04:06:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 04:06:03,647 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1371 transitions. [2023-02-17 04:06:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 1.8883720930232557) internal successors, (406), 196 states have internal predecessors, (406), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2023-02-17 04:06:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1371 transitions. [2023-02-17 04:06:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1221 [2023-02-17 04:06:03,658 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 04:06:03,658 INFO L195 NwaCegarLoop]: trace histogram [317, 317, 317, 26, 25, 25, 25, 25, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1] [2023-02-17 04:06:03,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-17 04:06:03,873 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 [2023-02-17 04:06:03,873 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-17 04:06:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:06:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash 712770233, now seen corresponding path program 19 times [2023-02-17 04:06:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:06:03,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926565125] [2023-02-17 04:06:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:06:03,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:06:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat