./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.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 c47e45e477fce3150ee146c7ef7679da7b29387c5fdc0f2faaf105b700984947 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 01:58:23,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 01:58:23,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 01:58:23,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 01:58:23,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 01:58:23,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 01:58:23,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 01:58:23,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 01:58:23,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 01:58:23,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 01:58:23,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 01:58:23,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 01:58:23,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 01:58:23,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 01:58:23,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 01:58:23,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 01:58:23,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 01:58:23,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 01:58:23,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 01:58:23,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 01:58:23,936 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 01:58:23,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 01:58:23,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 01:58:23,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 01:58:23,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 01:58:23,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 01:58:23,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 01:58:23,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 01:58:23,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 01:58:23,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 01:58:23,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 01:58:23,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 01:58:23,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 01:58:23,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 01:58:23,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 01:58:23,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 01:58:23,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 01:58:23,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 01:58:23,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 01:58:23,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 01:58:23,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 01:58:23,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 01:58:23,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 01:58:23,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 01:58:23,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 01:58:23,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 01:58:23,976 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 01:58:23,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 01:58:23,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 01:58:23,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 01:58:23,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 01:58:23,977 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 01:58:23,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 01:58:23,978 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 01:58:23,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 01:58:23,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:58:23,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 01:58:23,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c47e45e477fce3150ee146c7ef7679da7b29387c5fdc0f2faaf105b700984947 [2022-07-13 01:58:24,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 01:58:24,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 01:58:24,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 01:58:24,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 01:58:24,184 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 01:58:24,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c [2022-07-13 01:58:24,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b4a1a8/354e721371c547b29341290304e49077/FLAG09ab7337d [2022-07-13 01:58:24,617 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 01:58:24,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-1.c [2022-07-13 01:58:24,622 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b4a1a8/354e721371c547b29341290304e49077/FLAG09ab7337d [2022-07-13 01:58:25,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36b4a1a8/354e721371c547b29341290304e49077 [2022-07-13 01:58:25,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 01:58:25,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 01:58:25,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 01:58:25,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 01:58:25,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 01:58:25,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ef4b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25, skipping insertion in model container [2022-07-13 01:58:25,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 01:58:25,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 01:58:25,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:58:25,239 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 01:58:25,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 01:58:25,260 INFO L208 MainTranslator]: Completed translation [2022-07-13 01:58:25,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25 WrapperNode [2022-07-13 01:58:25,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 01:58:25,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 01:58:25,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 01:58:25,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 01:58:25,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,287 INFO L137 Inliner]: procedures = 9, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-13 01:58:25,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 01:58:25,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 01:58:25,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 01:58:25,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 01:58:25,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 01:58:25,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 01:58:25,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 01:58:25,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 01:58:25,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (1/1) ... [2022-07-13 01:58:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 01:58:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:25,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 01:58:25,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 01:58:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 01:58:25,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 01:58:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 01:58:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 01:58:25,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 01:58:25,442 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 01:58:25,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 01:58:25,531 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 01:58:25,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 01:58:25,535 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 01:58:25,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:58:25 BoogieIcfgContainer [2022-07-13 01:58:25,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 01:58:25,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 01:58:25,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 01:58:25,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 01:58:25,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:58:25" (1/3) ... [2022-07-13 01:58:25,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e487a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:58:25, skipping insertion in model container [2022-07-13 01:58:25,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:58:25" (2/3) ... [2022-07-13 01:58:25,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e487a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:58:25, skipping insertion in model container [2022-07-13 01:58:25,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:58:25" (3/3) ... [2022-07-13 01:58:25,542 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-1.c [2022-07-13 01:58:25,552 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 01:58:25,552 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 01:58:25,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 01:58:25,597 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@630b7765, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@308c8202 [2022-07-13 01:58:25,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 01:58:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.625) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 01:58:25,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:25,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 01:58:25,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2022-07-13 01:58:25,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:25,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974185919] [2022-07-13 01:58:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:25,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:25,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:25,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974185919] [2022-07-13 01:58:25,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974185919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:58:25,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:58:25,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:58:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646696745] [2022-07-13 01:58:25,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:58:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:58:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:58:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:58:25,748 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.625) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:25,827 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-07-13 01:58:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:58:25,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-13 01:58:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:25,834 INFO L225 Difference]: With dead ends: 40 [2022-07-13 01:58:25,835 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 01:58:25,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:58:25,846 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:25,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:58:25,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 01:58:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-13 01:58:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-13 01:58:25,878 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2022-07-13 01:58:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:25,879 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-13 01:58:25,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-13 01:58:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 01:58:25,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:25,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-13 01:58:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 01:58:25,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2022-07-13 01:58:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364309567] [2022-07-13 01:58:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:25,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 01:58:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:25,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364309567] [2022-07-13 01:58:25,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364309567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:58:25,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 01:58:25,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 01:58:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707081795] [2022-07-13 01:58:25,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:58:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:58:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:58:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 01:58:25,946 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:25,975 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-07-13 01:58:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:58:25,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 01:58:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:25,977 INFO L225 Difference]: With dead ends: 21 [2022-07-13 01:58:25,978 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 01:58:25,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 01:58:25,979 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:25,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:58:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 01:58:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 01:58:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-13 01:58:25,989 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-07-13 01:58:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:25,989 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-13 01:58:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-13 01:58:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 01:58:25,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:25,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-07-13 01:58:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 01:58:25,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2022-07-13 01:58:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:25,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484412837] [2022-07-13 01:58:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:26,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:26,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484412837] [2022-07-13 01:58:26,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484412837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349483165] [2022-07-13 01:58:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:26,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:26,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:26,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:26,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 01:58:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:26,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:58:26,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:26,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 01:58:26,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349483165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 01:58:26,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 01:58:26,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 01:58:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942585056] [2022-07-13 01:58:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 01:58:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 01:58:26,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 01:58:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 01:58:26,183 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:26,198 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-13 01:58:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 01:58:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 01:58:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:26,200 INFO L225 Difference]: With dead ends: 20 [2022-07-13 01:58:26,200 INFO L226 Difference]: Without dead ends: 19 [2022-07-13 01:58:26,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 01:58:26,201 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:26,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:58:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-13 01:58:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-07-13 01:58:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-07-13 01:58:26,204 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2022-07-13 01:58:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:26,205 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-07-13 01:58:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-07-13 01:58:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 01:58:26,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:26,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:26,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 01:58:26,425 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 [2022-07-13 01:58:26,426 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1707960817, now seen corresponding path program 1 times [2022-07-13 01:58:26,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:26,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653272716] [2022-07-13 01:58:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:26,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653272716] [2022-07-13 01:58:26,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653272716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:26,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565211220] [2022-07-13 01:58:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:26,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:26,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:26,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:26,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 01:58:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 01:58:26,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:26,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:58:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:26,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565211220] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:58:26,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 01:58:26,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-13 01:58:26,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938510378] [2022-07-13 01:58:26,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 01:58:26,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 01:58:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:26,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 01:58:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-13 01:58:26,638 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:26,691 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-07-13 01:58:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 01:58:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 01:58:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:26,695 INFO L225 Difference]: With dead ends: 33 [2022-07-13 01:58:26,696 INFO L226 Difference]: Without dead ends: 24 [2022-07-13 01:58:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 01:58:26,697 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:26,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 78 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 01:58:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-13 01:58:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-13 01:58:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-07-13 01:58:26,706 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2022-07-13 01:58:26,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:26,706 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-07-13 01:58:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-07-13 01:58:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 01:58:26,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:26,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:26,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 01:58:26,926 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,SelfDestructingSolverStorable3 [2022-07-13 01:58:26,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1608360199, now seen corresponding path program 2 times [2022-07-13 01:58:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182181219] [2022-07-13 01:58:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:27,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182181219] [2022-07-13 01:58:27,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182181219] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893581644] [2022-07-13 01:58:27,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 01:58:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:27,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:27,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:27,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 01:58:27,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 01:58:27,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:58:27,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 01:58:27,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:27,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:58:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:27,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893581644] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:58:27,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 01:58:27,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-07-13 01:58:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345778687] [2022-07-13 01:58:27,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 01:58:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 01:58:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 01:58:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-13 01:58:27,320 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:27,469 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-13 01:58:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 01:58:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-13 01:58:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:27,472 INFO L225 Difference]: With dead ends: 49 [2022-07-13 01:58:27,472 INFO L226 Difference]: Without dead ends: 40 [2022-07-13 01:58:27,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2022-07-13 01:58:27,475 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:27,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:58:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-13 01:58:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-13 01:58:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-07-13 01:58:27,505 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 21 [2022-07-13 01:58:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:27,505 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-07-13 01:58:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-07-13 01:58:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 01:58:27,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:27,506 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:27,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 01:58:27,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:27,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:27,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1880116983, now seen corresponding path program 3 times [2022-07-13 01:58:27,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:27,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970216648] [2022-07-13 01:58:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:27,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:27,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:27,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970216648] [2022-07-13 01:58:27,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970216648] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196351102] [2022-07-13 01:58:27,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 01:58:27,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:27,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:27,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 01:58:28,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-13 01:58:28,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:58:28,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 01:58:28,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:28,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:58:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:28,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196351102] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:58:28,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 01:58:28,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-07-13 01:58:28,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415838752] [2022-07-13 01:58:28,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 01:58:28,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 01:58:28,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:28,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 01:58:28,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 01:58:28,317 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:28,537 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-07-13 01:58:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 01:58:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-07-13 01:58:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:28,538 INFO L225 Difference]: With dead ends: 81 [2022-07-13 01:58:28,538 INFO L226 Difference]: Without dead ends: 72 [2022-07-13 01:58:28,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 01:58:28,540 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 99 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:28,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 102 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:58:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-13 01:58:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-07-13 01:58:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2022-07-13 01:58:28,546 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 37 [2022-07-13 01:58:28,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:28,546 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2022-07-13 01:58:28,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2022-07-13 01:58:28,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 01:58:28,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:28,548 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:28,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 01:58:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:28,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash -754447657, now seen corresponding path program 4 times [2022-07-13 01:58:28,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:28,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226530740] [2022-07-13 01:58:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:28,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:29,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226530740] [2022-07-13 01:58:29,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226530740] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293006923] [2022-07-13 01:58:29,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 01:58:29,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:29,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:29,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 01:58:29,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 01:58:29,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:58:29,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 01:58:29,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:29,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:58:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:30,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293006923] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:58:30,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 01:58:30,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-07-13 01:58:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645475824] [2022-07-13 01:58:30,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 01:58:30,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-07-13 01:58:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-07-13 01:58:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-07-13 01:58:30,073 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:30,737 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2022-07-13 01:58:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-13 01:58:30,741 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-13 01:58:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:30,742 INFO L225 Difference]: With dead ends: 145 [2022-07-13 01:58:30,742 INFO L226 Difference]: Without dead ends: 136 [2022-07-13 01:58:30,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2595, Invalid=6525, Unknown=0, NotChecked=0, Total=9120 [2022-07-13 01:58:30,745 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 233 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:30,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 129 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 01:58:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-13 01:58:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-07-13 01:58:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 1.037313432835821) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2022-07-13 01:58:30,753 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 69 [2022-07-13 01:58:30,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:30,754 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2022-07-13 01:58:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2022-07-13 01:58:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 01:58:30,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:30,755 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:30,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 01:58:30,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:30,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:30,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1547764375, now seen corresponding path program 5 times [2022-07-13 01:58:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:30,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613680005] [2022-07-13 01:58:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:32,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:32,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613680005] [2022-07-13 01:58:32,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613680005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:32,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871454063] [2022-07-13 01:58:32,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 01:58:32,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:32,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:32,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:32,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 01:58:34,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-07-13 01:58:34,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 01:58:34,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-13 01:58:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 01:58:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:34,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 01:58:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:37,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871454063] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 01:58:37,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 01:58:37,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2022-07-13 01:58:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668806598] [2022-07-13 01:58:37,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 01:58:37,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-07-13 01:58:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 01:58:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-07-13 01:58:37,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2022-07-13 01:58:37,034 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 130 states, 130 states have (on average 2.0307692307692307) internal successors, (264), 130 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 01:58:39,047 INFO L93 Difference]: Finished difference Result 273 states and 310 transitions. [2022-07-13 01:58:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-07-13 01:58:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.0307692307692307) internal successors, (264), 130 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-07-13 01:58:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 01:58:39,051 INFO L225 Difference]: With dead ends: 273 [2022-07-13 01:58:39,051 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 01:58:39,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2022-07-13 01:58:39,059 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 495 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 01:58:39,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 165 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 01:58:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 01:58:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-07-13 01:58:39,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.0190839694656488) internal successors, (267), 263 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 267 transitions. [2022-07-13 01:58:39,073 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 267 transitions. Word has length 133 [2022-07-13 01:58:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 01:58:39,074 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 267 transitions. [2022-07-13 01:58:39,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.0307692307692307) internal successors, (264), 130 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 01:58:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 267 transitions. [2022-07-13 01:58:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-13 01:58:39,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 01:58:39,077 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 01:58:39,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 01:58:39,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:39,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 01:58:39,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 01:58:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1138291223, now seen corresponding path program 6 times [2022-07-13 01:58:39,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 01:58:39,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687465444] [2022-07-13 01:58:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 01:58:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 01:58:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 01:58:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 01:58:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 01:58:42,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687465444] [2022-07-13 01:58:42,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687465444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 01:58:42,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894710045] [2022-07-13 01:58:42,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 01:58:42,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 01:58:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 01:58:42,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 01:58:42,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process