./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.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 676276db79a43f24ac4768848febffe3dd303b6e2c16071dede4e51ae957576d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:43:32,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:43:32,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:43:32,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:43:32,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:43:32,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:43:32,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:43:32,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:43:32,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:43:32,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:43:32,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:43:32,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:43:32,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:43:32,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:43:32,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:43:32,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:43:32,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:43:32,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:43:32,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:43:32,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:43:32,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:43:32,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:43:32,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:43:32,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:43:32,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:43:32,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:43:32,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:43:32,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:43:32,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:43:32,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:43:32,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:43:32,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:43:32,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:43:32,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:43:32,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:43:32,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:43:32,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:43:32,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:43:32,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:43:32,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:43:32,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:43:32,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:43:32,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:43:32,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:43:32,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:43:32,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:43:32,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:43:32,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:43:32,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:43:32,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:43:32,683 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:43:32,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:43:32,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:43:32,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:43:32,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:43:32,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:43:32,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:43:32,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:43:32,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:43:32,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:32,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:43:32,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:43:32,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:43:32,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:43:32,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:43:32,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:43:32,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 676276db79a43f24ac4768848febffe3dd303b6e2c16071dede4e51ae957576d [2021-12-28 08:43:32,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:43:32,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:43:32,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:43:32,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:43:32,967 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:43:32,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-12-28 08:43:33,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2377b0375/be9b3f289c8c44cb9aa7cfb153527add/FLAG18bfd1b19 [2021-12-28 08:43:33,328 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:43:33,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-12-28 08:43:33,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2377b0375/be9b3f289c8c44cb9aa7cfb153527add/FLAG18bfd1b19 [2021-12-28 08:43:33,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2377b0375/be9b3f289c8c44cb9aa7cfb153527add [2021-12-28 08:43:33,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:43:33,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:43:33,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:33,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:43:33,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:43:33,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3046f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33, skipping insertion in model container [2021-12-28 08:43:33,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:43:33,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:43:33,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:33,853 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:43:33,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:33,870 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:43:33,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33 WrapperNode [2021-12-28 08:43:33,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:33,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:33,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:43:33,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:43:33,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,890 INFO L137 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2021-12-28 08:43:33,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:33,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:43:33,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:43:33,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:43:33,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:43:33,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:43:33,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:43:33,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:43:33,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:33,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:33,956 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) [2021-12-28 08:43:33,968 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 [2021-12-28 08:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-12-28 08:43:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-12-28 08:43:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:43:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:43:34,029 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:43:34,030 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:43:34,201 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:43:34,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:43:34,207 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 08:43:34,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:34 BoogieIcfgContainer [2021-12-28 08:43:34,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:43:34,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:43:34,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:43:34,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:43:34,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:43:33" (1/3) ... [2021-12-28 08:43:34,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79544533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:34, skipping insertion in model container [2021-12-28 08:43:34,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (2/3) ... [2021-12-28 08:43:34,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79544533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:34, skipping insertion in model container [2021-12-28 08:43:34,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:34" (3/3) ... [2021-12-28 08:43:34,216 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig2.c [2021-12-28 08:43:34,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:43:34,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-28 08:43:34,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:43:34,300 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 08:43:34,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-28 08:43:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 43 states have internal predecessors, (58), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 08:43:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 08:43:34,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 08:43:34,322 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2218532, now seen corresponding path program 1 times [2021-12-28 08:43:34,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804384647] [2021-12-28 08:43:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804384647] [2021-12-28 08:43:34,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804384647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:43:34,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135106870] [2021-12-28 08:43:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:43:34,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:43:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,498 INFO L87 Difference]: Start difference. First operand has 49 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 43 states have internal predecessors, (58), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 08:43:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,562 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2021-12-28 08:43:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:43:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-12-28 08:43:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,569 INFO L225 Difference]: With dead ends: 53 [2021-12-28 08:43:34,569 INFO L226 Difference]: Without dead ends: 43 [2021-12-28 08:43:34,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,573 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 75 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-28 08:43:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-12-28 08:43:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 37 states have internal predecessors, (51), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 08:43:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2021-12-28 08:43:34,609 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 4 [2021-12-28 08:43:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,610 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2021-12-28 08:43:34,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 08:43:34,611 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-12-28 08:43:34,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-28 08:43:34,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-28 08:43:34,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:43:34,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:34,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 68774573, now seen corresponding path program 1 times [2021-12-28 08:43:34,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793103373] [2021-12-28 08:43:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793103373] [2021-12-28 08:43:34,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793103373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:43:34,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621601812] [2021-12-28 08:43:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:43:34,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:43:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,644 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,678 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2021-12-28 08:43:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:43:34,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-28 08:43:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,680 INFO L225 Difference]: With dead ends: 69 [2021-12-28 08:43:34,681 INFO L226 Difference]: Without dead ends: 67 [2021-12-28 08:43:34,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,683 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 101 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-28 08:43:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2021-12-28 08:43:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.42) internal successors, (71), 52 states have internal predecessors, (71), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2021-12-28 08:43:34,700 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 5 [2021-12-28 08:43:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,700 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2021-12-28 08:43:34,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2021-12-28 08:43:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-28 08:43:34,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:43:34,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1927016760, now seen corresponding path program 1 times [2021-12-28 08:43:34,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219406984] [2021-12-28 08:43:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219406984] [2021-12-28 08:43:34,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219406984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:43:34,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936944935] [2021-12-28 08:43:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:43:34,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:43:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,750 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 08:43:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,789 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2021-12-28 08:43:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:43:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-28 08:43:34,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,791 INFO L225 Difference]: With dead ends: 66 [2021-12-28 08:43:34,793 INFO L226 Difference]: Without dead ends: 65 [2021-12-28 08:43:34,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,794 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 99 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-28 08:43:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-12-28 08:43:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 54 states have internal predecessors, (73), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2021-12-28 08:43:34,811 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 15 [2021-12-28 08:43:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,811 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2021-12-28 08:43:34,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-12-28 08:43:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2021-12-28 08:43:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 08:43:34,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:43:34,817 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash -392022441, now seen corresponding path program 1 times [2021-12-28 08:43:34,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312713910] [2021-12-28 08:43:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312713910] [2021-12-28 08:43:34,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312713910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:34,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573770370] [2021-12-28 08:43:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:34,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:34,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:34,872 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-28 08:43:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,935 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2021-12-28 08:43:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:34,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-12-28 08:43:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,936 INFO L225 Difference]: With dead ends: 64 [2021-12-28 08:43:34,936 INFO L226 Difference]: Without dead ends: 63 [2021-12-28 08:43:34,936 INFO L932 BasicCegarLoop]: 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 [2021-12-28 08:43:34,937 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 114 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-28 08:43:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-28 08:43:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 53 states have internal predecessors, (72), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-12-28 08:43:34,944 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 16 [2021-12-28 08:43:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,944 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-12-28 08:43:34,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-28 08:43:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-12-28 08:43:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 08:43:34,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:43:34,945 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 726265332, now seen corresponding path program 1 times [2021-12-28 08:43:34,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861664925] [2021-12-28 08:43:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861664925] [2021-12-28 08:43:34,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861664925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:34,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637412193] [2021-12-28 08:43:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:34,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:34,990 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-28 08:43:35,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,043 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2021-12-28 08:43:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:35,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-12-28 08:43:35,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,045 INFO L225 Difference]: With dead ends: 67 [2021-12-28 08:43:35,045 INFO L226 Difference]: Without dead ends: 66 [2021-12-28 08:43:35,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:35,046 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 58 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-28 08:43:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2021-12-28 08:43:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 53 states have internal predecessors, (72), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-12-28 08:43:35,052 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 17 [2021-12-28 08:43:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,053 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-12-28 08:43:35,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-28 08:43:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-12-28 08:43:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 08:43:35,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 08:43:35,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1536925138, now seen corresponding path program 1 times [2021-12-28 08:43:35,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497821159] [2021-12-28 08:43:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497821159] [2021-12-28 08:43:35,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497821159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:35,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:35,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443294206] [2021-12-28 08:43:35,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:35,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:35,093 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-28 08:43:35,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,121 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2021-12-28 08:43:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:35,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-12-28 08:43:35,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,123 INFO L225 Difference]: With dead ends: 73 [2021-12-28 08:43:35,123 INFO L226 Difference]: Without dead ends: 72 [2021-12-28 08:43:35,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:35,124 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 52 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 98 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-28 08:43:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2021-12-28 08:43:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2021-12-28 08:43:35,132 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 17 [2021-12-28 08:43:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2021-12-28 08:43:35,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-28 08:43:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2021-12-28 08:43:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 08:43:35,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,133 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 08:43:35,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1223560697, now seen corresponding path program 1 times [2021-12-28 08:43:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591357498] [2021-12-28 08:43:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591357498] [2021-12-28 08:43:35,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591357498] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764476122] [2021-12-28 08:43:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:35,164 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) [2021-12-28 08:43:35,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:43:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:43:35,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:43:35,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764476122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:43:35,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-12-28 08:43:35,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452899118] [2021-12-28 08:43:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:35,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:35,385 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-12-28 08:43:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,408 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2021-12-28 08:43:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:35,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-28 08:43:35,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,410 INFO L225 Difference]: With dead ends: 69 [2021-12-28 08:43:35,410 INFO L226 Difference]: Without dead ends: 62 [2021-12-28 08:43:35,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:35,411 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 120 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-28 08:43:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-28 08:43:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 08:43:35,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 86 transitions. [2021-12-28 08:43:35,416 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 86 transitions. Word has length 18 [2021-12-28 08:43:35,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,416 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 86 transitions. [2021-12-28 08:43:35,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-12-28 08:43:35,417 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2021-12-28 08:43:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 08:43:35,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:35,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,634 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:43:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash 483696656, now seen corresponding path program 1 times [2021-12-28 08:43:35,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529068855] [2021-12-28 08:43:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:43:35,641 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 08:43:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 08:43:35,666 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 08:43:35,669 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 08:43:35,669 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-12-28 08:43:35,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-12-28 08:43:35,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-12-28 08:43:35,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-12-28 08:43:35,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-12-28 08:43:35,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-12-28 08:43:35,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 08:43:35,674 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,676 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 08:43:35,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 08:43:35 BoogieIcfgContainer [2021-12-28 08:43:35,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 08:43:35,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 08:43:35,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 08:43:35,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 08:43:35,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:34" (3/4) ... [2021-12-28 08:43:35,699 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-28 08:43:35,725 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 08:43:35,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 08:43:35,727 INFO L158 Benchmark]: Toolchain (without parser) took 1975.03ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 45.5MB in the beginning and 49.6MB in the end (delta: -4.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,727 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 08:43:35,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 118.31ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 36.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.00ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,728 INFO L158 Benchmark]: Boogie Preprocessor took 43.57ms. Allocated memory is still 65.0MB. Free memory was 34.7MB in the beginning and 47.9MB in the end (delta: -13.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,728 INFO L158 Benchmark]: RCFGBuilder took 273.33ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 37.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,728 INFO L158 Benchmark]: TraceAbstraction took 1487.29ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 36.6MB in the beginning and 51.7MB in the end (delta: -15.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,729 INFO L158 Benchmark]: Witness Printer took 29.53ms. Allocated memory is still 86.0MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 08:43:35,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 118.31ms. Allocated memory is still 65.0MB. Free memory was 45.4MB in the beginning and 36.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.00ms. Allocated memory is still 65.0MB. Free memory was 36.2MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.57ms. Allocated memory is still 65.0MB. Free memory was 34.7MB in the beginning and 47.9MB in the end (delta: -13.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.33ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 37.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1487.29ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 36.6MB in the beginning and 51.7MB in the end (delta: -15.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Witness Printer took 29.53ms. Allocated memory is still 86.0MB. Free memory was 51.7MB in the beginning and 49.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 81]: integer overflow possible integer overflow possible We found a FailurePath: [L53] int d = 1; [L54] int x = __VERIFIER_nondet_int(); [L56] COND TRUE __VERIFIER_nondet_int() [L57] EXPR d - 1 [L57] d = d - 1 VAL [d=0, x=2147483647] [L61] COND FALSE !(__VERIFIER_nondet_int()) [L64] COND FALSE !(__VERIFIER_nondet_int()) [L67] COND FALSE !(__VERIFIER_nondet_int()) [L70] COND FALSE !(__VERIFIER_nondet_int()) [L76] COND TRUE __VERIFIER_nondet_int() [L77] EXPR d - 1 [L77] d = d - 1 VAL [d=-1, x=2147483647] [L80] COND TRUE x > 0 VAL [d=-1, x=2147483647] [L81] x - d VAL [d=-1, x=2147483647] - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 57]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 702 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 328 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 374 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-28 08:43:35,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)