./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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/loop-zilu/benchmark38_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:52:11,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:52:11,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:52:11,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:52:11,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:52:11,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:52:11,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:52:11,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:52:11,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:52:11,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:52:11,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:52:11,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:52:11,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:52:11,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:52:11,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:52:11,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:52:11,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:52:11,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:52:11,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:52:11,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:52:11,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:52:11,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:52:11,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:52:11,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:52:11,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:52:11,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:52:11,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:52:11,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:52:11,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:52:11,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:52:11,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:52:11,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:52:11,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:52:11,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:52:11,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:52:11,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:52:11,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:52:11,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:52:11,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:52:11,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:52:11,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:52:11,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:52:11,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:52:11,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:52:11,915 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:52:11,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:52:11,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:52:11,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:52:11,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:52:11,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:52:11,917 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:52:11,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:52:11,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:52:11,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:52:11,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:52:11,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:52:11,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:52:11,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:52:11,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:52:11,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:52:11,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:52:11,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:52:11,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:52:11,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:52:11,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:52:11,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:52:11,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:52:11,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:52:11,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:52:11,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:52:11,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:52:11,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2021-12-21 20:52:12,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:52:12,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:52:12,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:52:12,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:52:12,167 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:52:12,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-12-21 20:52:12,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006f0668f/3ef6766e8393406daa54d5852fb2eb16/FLAGd83b1c933 [2021-12-21 20:52:12,580 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:52:12,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2021-12-21 20:52:12,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006f0668f/3ef6766e8393406daa54d5852fb2eb16/FLAGd83b1c933 [2021-12-21 20:52:12,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006f0668f/3ef6766e8393406daa54d5852fb2eb16 [2021-12-21 20:52:12,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:52:12,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:52:12,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:52:12,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:52:12,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:52:12,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bb6058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12, skipping insertion in model container [2021-12-21 20:52:12,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:52:12,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:52:12,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-12-21 20:52:12,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:52:12,799 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:52:12,809 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2021-12-21 20:52:12,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:52:12,822 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:52:12,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12 WrapperNode [2021-12-21 20:52:12,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:52:12,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:52:12,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:52:12,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:52:12,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,849 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-12-21 20:52:12,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:52:12,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:52:12,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:52:12,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:52:12,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:52:12,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:52:12,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:52:12,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:52:12,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (1/1) ... [2021-12-21 20:52:12,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:52:12,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:12,898 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) [2021-12-21 20:52:12,900 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 [2021-12-21 20:52:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:52:12,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:52:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:52:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:52:12,965 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:52:12,966 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:52:13,059 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:52:13,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:52:13,063 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 20:52:13,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:52:13 BoogieIcfgContainer [2021-12-21 20:52:13,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:52:13,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:52:13,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:52:13,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:52:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:52:12" (1/3) ... [2021-12-21 20:52:13,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48db5322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:52:13, skipping insertion in model container [2021-12-21 20:52:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:52:12" (2/3) ... [2021-12-21 20:52:13,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48db5322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:52:13, skipping insertion in model container [2021-12-21 20:52:13,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:52:13" (3/3) ... [2021-12-21 20:52:13,071 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2021-12-21 20:52:13,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:52:13,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-21 20:52:13,106 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:52:13,111 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 [2021-12-21 20:52:13,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 20:52:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) 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) [2021-12-21 20:52:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 20:52:13,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 20:52:13,125 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)] === [2021-12-21 20:52:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-21 20:52:13,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374969122] [2021-12-21 20:52:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374969122] [2021-12-21 20:52:13,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374969122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:52:13,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511539666] [2021-12-21 20:52:13,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:52:13,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:52:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:52:13,308 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) 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) 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) [2021-12-21 20:52:13,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,363 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-12-21 20:52:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:52:13,369 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 [2021-12-21 20:52:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,376 INFO L225 Difference]: With dead ends: 43 [2021-12-21 20:52:13,384 INFO L226 Difference]: Without dead ends: 23 [2021-12-21 20:52:13,386 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 [2021-12-21 20:52:13,402 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 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 [2021-12-21 20:52:13,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-21 20:52:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-12-21 20:52:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2021-12-21 20:52:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-21 20:52:13,433 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-12-21 20:52:13,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,433 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-21 20:52:13,433 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) [2021-12-21 20:52:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-21 20:52:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 20:52:13,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 20:52:13,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:52:13,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:13,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash 28695922, now seen corresponding path program 1 times [2021-12-21 20:52:13,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687694732] [2021-12-21 20:52:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687694732] [2021-12-21 20:52:13,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687694732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:52:13,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519659596] [2021-12-21 20:52:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:52:13,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:52:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:52:13,511 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2021-12-21 20:52:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,526 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-12-21 20:52:13,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:52:13,527 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 [2021-12-21 20:52:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,528 INFO L225 Difference]: With dead ends: 27 [2021-12-21 20:52:13,528 INFO L226 Difference]: Without dead ends: 26 [2021-12-21 20:52:13,529 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 [2021-12-21 20:52:13,530 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:13,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-21 20:52:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-12-21 20:52:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-12-21 20:52:13,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-21 20:52:13,543 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-12-21 20:52:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,543 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-21 20:52:13,543 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) [2021-12-21 20:52:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-21 20:52:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 20:52:13,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 20:52:13,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 20:52:13,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-21 20:52:13,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995443588] [2021-12-21 20:52:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995443588] [2021-12-21 20:52:13,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995443588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:52:13,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411646271] [2021-12-21 20:52:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:52:13,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:52:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:52:13,590 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 20:52:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,607 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-21 20:52:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:52:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-21 20:52:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,608 INFO L225 Difference]: With dead ends: 19 [2021-12-21 20:52:13,609 INFO L226 Difference]: Without dead ends: 18 [2021-12-21 20:52:13,609 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 [2021-12-21 20:52:13,612 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:13,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-21 20:52:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-21 20:52:13,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 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) [2021-12-21 20:52:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-21 20:52:13,621 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2021-12-21 20:52:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,622 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-21 20:52:13,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 20:52:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-21 20:52:13,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 20:52:13,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 20:52:13,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:52:13,623 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)] === [2021-12-21 20:52:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 889573643, now seen corresponding path program 1 times [2021-12-21 20:52:13,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476053287] [2021-12-21 20:52:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476053287] [2021-12-21 20:52:13,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476053287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:52:13,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424951218] [2021-12-21 20:52:13,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:52:13,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:52:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:52:13,671 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 20:52:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,692 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-12-21 20:52:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:52:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-21 20:52:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,693 INFO L225 Difference]: With dead ends: 25 [2021-12-21 20:52:13,694 INFO L226 Difference]: Without dead ends: 22 [2021-12-21 20:52:13,694 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 [2021-12-21 20:52:13,696 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:13,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-21 20:52:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-12-21 20:52:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 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) [2021-12-21 20:52:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-12-21 20:52:13,706 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-12-21 20:52:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-12-21 20:52:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 20:52:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-12-21 20:52:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 20:52:13,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:52:13,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 20:52:13,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-21 20:52:13,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436067923] [2021-12-21 20:52:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436067923] [2021-12-21 20:52:13,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436067923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:52:13,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91932207] [2021-12-21 20:52:13,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:52:13,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:52:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:52:13,746 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 20:52:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,776 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-12-21 20:52:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:52:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-21 20:52:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,777 INFO L225 Difference]: With dead ends: 22 [2021-12-21 20:52:13,777 INFO L226 Difference]: Without dead ends: 21 [2021-12-21 20:52:13,778 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 [2021-12-21 20:52:13,782 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:13,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-21 20:52:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-12-21 20:52:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 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) [2021-12-21 20:52:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-12-21 20:52:13,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2021-12-21 20:52:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,790 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-12-21 20:52:13,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 20:52:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-12-21 20:52:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:52:13,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:52:13,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 20:52:13,791 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)] === [2021-12-21 20:52:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-21 20:52:13,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913208612] [2021-12-21 20:52:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913208612] [2021-12-21 20:52:13,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913208612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:52:13,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:52:13,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:52:13,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175597319] [2021-12-21 20:52:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:52:13,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:52:13,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:52:13,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:52:13,833 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 20:52:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:13,850 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-12-21 20:52:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:52:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-12-21 20:52:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:13,851 INFO L225 Difference]: With dead ends: 19 [2021-12-21 20:52:13,851 INFO L226 Difference]: Without dead ends: 16 [2021-12-21 20:52:13,852 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 [2021-12-21 20:52:13,853 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:13,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-21 20:52:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-21 20:52:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 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) [2021-12-21 20:52:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-12-21 20:52:13,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-12-21 20:52:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:13,857 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-12-21 20:52:13,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-21 20:52:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-12-21 20:52:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 20:52:13,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:13,858 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:52:13,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 20:52:13,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-21 20:52:13,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:13,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495471786] [2021-12-21 20:52:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:13,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495471786] [2021-12-21 20:52:13,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495471786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:13,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135585544] [2021-12-21 20:52:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:13,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:13,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:13,900 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) [2021-12-21 20:52:13,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:52:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:13,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:52:13,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:13,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135585544] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:14,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-21 20:52:14,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110081367] [2021-12-21 20:52:14,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:14,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:52:14,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:52:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:52:14,024 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-21 20:52:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:14,043 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-12-21 20:52:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:52:14,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 10 [2021-12-21 20:52:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:14,044 INFO L225 Difference]: With dead ends: 38 [2021-12-21 20:52:14,044 INFO L226 Difference]: Without dead ends: 37 [2021-12-21 20:52:14,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:52:14,045 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:14,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-21 20:52:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-12-21 20:52:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 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) [2021-12-21 20:52:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-12-21 20:52:14,050 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2021-12-21 20:52:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:14,051 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-12-21 20:52:14,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-21 20:52:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-12-21 20:52:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 20:52:14,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:14,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:52:14,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:14,268 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 [2021-12-21 20:52:14,269 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)] === [2021-12-21 20:52:14,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 47508542, now seen corresponding path program 1 times [2021-12-21 20:52:14,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:14,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614015136] [2021-12-21 20:52:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:14,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614015136] [2021-12-21 20:52:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614015136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:14,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936844156] [2021-12-21 20:52:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:14,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:14,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:14,305 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) [2021-12-21 20:52:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:52:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:14,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:52:14,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936844156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:14,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:14,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-21 20:52:14,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307929556] [2021-12-21 20:52:14,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:14,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 20:52:14,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 20:52:14,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-21 20:52:14,425 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2021-12-21 20:52:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:14,461 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-12-21 20:52:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 20:52:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 10 [2021-12-21 20:52:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:14,463 INFO L225 Difference]: With dead ends: 34 [2021-12-21 20:52:14,463 INFO L226 Difference]: Without dead ends: 30 [2021-12-21 20:52:14,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:52:14,467 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:14,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-21 20:52:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-12-21 20:52:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-12-21 20:52:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-12-21 20:52:14,480 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2021-12-21 20:52:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:14,480 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-12-21 20:52:14,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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) [2021-12-21 20:52:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-12-21 20:52:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 20:52:14,481 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:14,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-12-21 20:52:14,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:14,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-21 20:52:14,701 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 1 times [2021-12-21 20:52:14,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:14,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118910070] [2021-12-21 20:52:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:14,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:14,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118910070] [2021-12-21 20:52:14,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118910070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:14,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783902200] [2021-12-21 20:52:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:14,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:14,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:14,764 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) [2021-12-21 20:52:14,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:52:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:14,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:52:14,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:14,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783902200] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:14,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:14,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-21 20:52:14,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259398429] [2021-12-21 20:52:14,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:14,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:52:14,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:52:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:52:14,934 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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) [2021-12-21 20:52:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:15,022 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-12-21 20:52:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:52:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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 [2021-12-21 20:52:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:15,026 INFO L225 Difference]: With dead ends: 51 [2021-12-21 20:52:15,026 INFO L226 Difference]: Without dead ends: 50 [2021-12-21 20:52:15,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-21 20:52:15,028 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:15,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 55 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:15,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-21 20:52:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-12-21 20:52:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 40 states have internal predecessors, (46), 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) [2021-12-21 20:52:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-12-21 20:52:15,038 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 17 [2021-12-21 20:52:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:15,039 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-12-21 20:52:15,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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) [2021-12-21 20:52:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-12-21 20:52:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 20:52:15,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:15,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-12-21 20:52:15,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:15,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:15,263 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:15,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773314, now seen corresponding path program 2 times [2021-12-21 20:52:15,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:15,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366778801] [2021-12-21 20:52:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:15,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:15,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:15,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366778801] [2021-12-21 20:52:15,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366778801] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:15,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216540870] [2021-12-21 20:52:15,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:52:15,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:15,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:15,343 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) [2021-12-21 20:52:15,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:52:15,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:52:15,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:15,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 20:52:15,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:15,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:15,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216540870] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:15,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:15,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-21 20:52:15,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345181962] [2021-12-21 20:52:15,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:15,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:52:15,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:52:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:52:15,550 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 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) [2021-12-21 20:52:15,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:15,628 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-12-21 20:52:15,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:52:15,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 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 20 [2021-12-21 20:52:15,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:15,629 INFO L225 Difference]: With dead ends: 56 [2021-12-21 20:52:15,630 INFO L226 Difference]: Without dead ends: 51 [2021-12-21 20:52:15,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-21 20:52:15,631 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 64 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:15,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 65 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:15,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-21 20:52:15,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-12-21 20:52:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 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) [2021-12-21 20:52:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-12-21 20:52:15,635 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2021-12-21 20:52:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:15,635 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-12-21 20:52:15,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 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) [2021-12-21 20:52:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-12-21 20:52:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 20:52:15,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:15,636 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-21 20:52:15,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:15,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:15,859 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-12-21 20:52:15,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:15,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60095878] [2021-12-21 20:52:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:15,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:15,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:15,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60095878] [2021-12-21 20:52:15,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60095878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:15,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565676050] [2021-12-21 20:52:15,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:52:15,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:15,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:15,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:52:15,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:52:15,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:15,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:52:15,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:16,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:16,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565676050] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:16,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:16,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-21 20:52:16,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432834030] [2021-12-21 20:52:16,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:16,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 20:52:16,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:16,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 20:52:16,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-21 20:52:16,095 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-12-21 20:52:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:16,125 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2021-12-21 20:52:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 20:52:16,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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 25 [2021-12-21 20:52:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:16,126 INFO L225 Difference]: With dead ends: 69 [2021-12-21 20:52:16,126 INFO L226 Difference]: Without dead ends: 68 [2021-12-21 20:52:16,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-21 20:52:16,127 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:16,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:52:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-21 20:52:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2021-12-21 20:52:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 58 states have internal predecessors, (65), 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) [2021-12-21 20:52:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-12-21 20:52:16,133 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 25 [2021-12-21 20:52:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:16,133 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-12-21 20:52:16,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-12-21 20:52:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-12-21 20:52:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 20:52:16,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:16,134 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-12-21 20:52:16,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:16,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 20:52:16,356 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:16,356 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 2 times [2021-12-21 20:52:16,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:16,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839260176] [2021-12-21 20:52:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:16,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:16,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:16,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839260176] [2021-12-21 20:52:16,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839260176] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:16,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818020169] [2021-12-21 20:52:16,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:52:16,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:16,488 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) [2021-12-21 20:52:16,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:52:16,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 20:52:16,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:16,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 20:52:16,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:16,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:16,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818020169] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:16,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:16,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2021-12-21 20:52:16,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068923679] [2021-12-21 20:52:16,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:16,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-21 20:52:16,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-21 20:52:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-12-21 20:52:16,893 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 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) [2021-12-21 20:52:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:17,149 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-12-21 20:52:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 20:52:17,150 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 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 [2021-12-21 20:52:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:17,150 INFO L225 Difference]: With dead ends: 101 [2021-12-21 20:52:17,150 INFO L226 Difference]: Without dead ends: 100 [2021-12-21 20:52:17,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-12-21 20:52:17,152 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 96 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:17,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 86 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-21 20:52:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 81. [2021-12-21 20:52:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 80 states have internal predecessors, (92), 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) [2021-12-21 20:52:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2021-12-21 20:52:17,162 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 37 [2021-12-21 20:52:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:17,162 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2021-12-21 20:52:17,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 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) [2021-12-21 20:52:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2021-12-21 20:52:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 20:52:17,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:17,163 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-12-21 20:52:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:17,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:17,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 915144126, now seen corresponding path program 3 times [2021-12-21 20:52:17,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:17,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724448871] [2021-12-21 20:52:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:17,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:17,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:17,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724448871] [2021-12-21 20:52:17,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724448871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:17,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772069478] [2021-12-21 20:52:17,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:52:17,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:17,523 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) [2021-12-21 20:52:17,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 20:52:17,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-21 20:52:17,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:17,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 20:52:17,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:17,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772069478] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:17,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:17,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-12-21 20:52:17,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731085657] [2021-12-21 20:52:17,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:17,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-21 20:52:17,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-21 20:52:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2021-12-21 20:52:17,924 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 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) [2021-12-21 20:52:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:18,142 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-12-21 20:52:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 20:52:18,143 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 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 40 [2021-12-21 20:52:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:18,143 INFO L225 Difference]: With dead ends: 102 [2021-12-21 20:52:18,143 INFO L226 Difference]: Without dead ends: 93 [2021-12-21 20:52:18,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=623, Invalid=1447, Unknown=0, NotChecked=0, Total=2070 [2021-12-21 20:52:18,145 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 103 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:18,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 117 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-21 20:52:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2021-12-21 20:52:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 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) [2021-12-21 20:52:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2021-12-21 20:52:18,151 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2021-12-21 20:52:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:18,151 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2021-12-21 20:52:18,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 32 states have internal predecessors, (78), 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) [2021-12-21 20:52:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2021-12-21 20:52:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 20:52:18,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:18,153 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-21 20:52:18,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:18,355 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-12-21 20:52:18,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:18,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42369713] [2021-12-21 20:52:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:18,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:18,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:18,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42369713] [2021-12-21 20:52:18,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42369713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672250204] [2021-12-21 20:52:18,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:52:18,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:18,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:18,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 20:52:18,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-21 20:52:18,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:18,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 20:52:18,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:18,614 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:18,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:18,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672250204] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:18,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:18,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-21 20:52:18,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394540787] [2021-12-21 20:52:18,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:18,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-21 20:52:18,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-21 20:52:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-21 20:52:18,881 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 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) [2021-12-21 20:52:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:18,952 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-12-21 20:52:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 20:52:18,953 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 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 55 [2021-12-21 20:52:18,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:18,953 INFO L225 Difference]: With dead ends: 141 [2021-12-21 20:52:18,953 INFO L226 Difference]: Without dead ends: 140 [2021-12-21 20:52:18,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-21 20:52:18,954 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:18,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 111 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-21 20:52:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2021-12-21 20:52:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.146551724137931) internal successors, (133), 118 states have internal predecessors, (133), 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) [2021-12-21 20:52:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2021-12-21 20:52:18,962 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 55 [2021-12-21 20:52:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:18,962 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2021-12-21 20:52:18,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.695652173913044) internal successors, (108), 24 states have internal predecessors, (108), 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) [2021-12-21 20:52:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2021-12-21 20:52:18,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-21 20:52:18,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:18,964 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-12-21 20:52:18,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:19,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 20:52:19,165 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 3 times [2021-12-21 20:52:19,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:19,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892478576] [2021-12-21 20:52:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:19,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:19,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:19,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892478576] [2021-12-21 20:52:19,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892478576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:19,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322017639] [2021-12-21 20:52:19,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 20:52:19,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:19,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:19,564 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:19,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 20:52:19,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-21 20:52:19,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:19,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-21 20:52:19,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:19,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:20,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322017639] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:20,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:20,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2021-12-21 20:52:20,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063492461] [2021-12-21 20:52:20,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:20,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-21 20:52:20,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-21 20:52:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-12-21 20:52:20,603 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 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) [2021-12-21 20:52:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:21,303 INFO L93 Difference]: Finished difference Result 201 states and 216 transitions. [2021-12-21 20:52:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-21 20:52:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 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 77 [2021-12-21 20:52:21,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:21,304 INFO L225 Difference]: With dead ends: 201 [2021-12-21 20:52:21,304 INFO L226 Difference]: Without dead ends: 200 [2021-12-21 20:52:21,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-12-21 20:52:21,307 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 326 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:21,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 127 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:21,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-21 20:52:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 161. [2021-12-21 20:52:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.1645569620253164) internal successors, (184), 160 states have internal predecessors, (184), 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) [2021-12-21 20:52:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 184 transitions. [2021-12-21 20:52:21,325 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 184 transitions. Word has length 77 [2021-12-21 20:52:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:21,326 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 184 transitions. [2021-12-21 20:52:21,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 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) [2021-12-21 20:52:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 184 transitions. [2021-12-21 20:52:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-21 20:52:21,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:21,328 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-12-21 20:52:21,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:21,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 20:52:21,551 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526782, now seen corresponding path program 4 times [2021-12-21 20:52:21,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:21,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116421252] [2021-12-21 20:52:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:21,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:21,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:21,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116421252] [2021-12-21 20:52:21,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116421252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:21,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889635635] [2021-12-21 20:52:21,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:52:21,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:21,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:21,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 20:52:21,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:52:21,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:21,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-21 20:52:21,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:22,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:22,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889635635] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:22,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:22,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-12-21 20:52:22,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375321055] [2021-12-21 20:52:22,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:22,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-21 20:52:22,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-21 20:52:22,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2021-12-21 20:52:22,968 INFO L87 Difference]: Start difference. First operand 161 states and 184 transitions. Second operand has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 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) [2021-12-21 20:52:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:23,591 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2021-12-21 20:52:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-21 20:52:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 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 80 [2021-12-21 20:52:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:23,592 INFO L225 Difference]: With dead ends: 194 [2021-12-21 20:52:23,593 INFO L226 Difference]: Without dead ends: 177 [2021-12-21 20:52:23,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2527, Invalid=6215, Unknown=0, NotChecked=0, Total=8742 [2021-12-21 20:52:23,595 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 438 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:23,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 145 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-21 20:52:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2021-12-21 20:52:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.06875) internal successors, (171), 162 states have internal predecessors, (171), 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) [2021-12-21 20:52:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2021-12-21 20:52:23,604 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2021-12-21 20:52:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:23,605 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2021-12-21 20:52:23,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.507936507936508) internal successors, (158), 64 states have internal predecessors, (158), 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) [2021-12-21 20:52:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2021-12-21 20:52:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-21 20:52:23,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:23,607 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-21 20:52:23,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:23,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 20:52:23,827 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-12-21 20:52:23,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:23,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004957964] [2021-12-21 20:52:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:23,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:24,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004957964] [2021-12-21 20:52:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004957964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165565651] [2021-12-21 20:52:24,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:52:24,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:24,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:24,104 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:24,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 20:52:24,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:52:24,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:24,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-21 20:52:24,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:24,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:25,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165565651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:25,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:25,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-21 20:52:25,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294808875] [2021-12-21 20:52:25,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:25,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-21 20:52:25,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:25,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-21 20:52:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-21 20:52:25,061 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 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) [2021-12-21 20:52:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:25,188 INFO L93 Difference]: Finished difference Result 285 states and 308 transitions. [2021-12-21 20:52:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-21 20:52:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 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 115 [2021-12-21 20:52:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:25,191 INFO L225 Difference]: With dead ends: 285 [2021-12-21 20:52:25,191 INFO L226 Difference]: Without dead ends: 284 [2021-12-21 20:52:25,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-21 20:52:25,192 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 229 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:25,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 209 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:52:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-21 20:52:25,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 239. [2021-12-21 20:52:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 238 states have internal predecessors, (269), 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) [2021-12-21 20:52:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2021-12-21 20:52:25,200 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 115 [2021-12-21 20:52:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:25,200 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2021-12-21 20:52:25,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.851063829787234) internal successors, (228), 48 states have internal predecessors, (228), 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) [2021-12-21 20:52:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2021-12-21 20:52:25,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-21 20:52:25,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:25,211 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-12-21 20:52:25,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:25,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 20:52:25,427 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 4 times [2021-12-21 20:52:25,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:25,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505834941] [2021-12-21 20:52:25,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:25,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:26,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505834941] [2021-12-21 20:52:26,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505834941] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946866843] [2021-12-21 20:52:26,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 20:52:26,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:26,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:26,534 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:26,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 20:52:26,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 20:52:26,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:26,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-21 20:52:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:26,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:29,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946866843] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:29,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:29,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2021-12-21 20:52:29,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332117640] [2021-12-21 20:52:29,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:29,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-12-21 20:52:29,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-12-21 20:52:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-12-21 20:52:29,475 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 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) [2021-12-21 20:52:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:31,554 INFO L93 Difference]: Finished difference Result 401 states and 432 transitions. [2021-12-21 20:52:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-12-21 20:52:31,554 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 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 157 [2021-12-21 20:52:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:31,556 INFO L225 Difference]: With dead ends: 401 [2021-12-21 20:52:31,556 INFO L226 Difference]: Without dead ends: 400 [2021-12-21 20:52:31,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7382 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=9952, Invalid=25204, Unknown=0, NotChecked=0, Total=35156 [2021-12-21 20:52:31,561 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 720 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:31,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 205 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:52:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-21 20:52:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 321. [2021-12-21 20:52:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 318 states have (on average 1.1572327044025157) internal successors, (368), 320 states have internal predecessors, (368), 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) [2021-12-21 20:52:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 368 transitions. [2021-12-21 20:52:31,570 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 368 transitions. Word has length 157 [2021-12-21 20:52:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:31,570 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 368 transitions. [2021-12-21 20:52:31,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 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) [2021-12-21 20:52:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 368 transitions. [2021-12-21 20:52:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 20:52:31,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:31,572 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-12-21 20:52:31,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:31,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 20:52:31,775 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash -994311234, now seen corresponding path program 5 times [2021-12-21 20:52:31,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:31,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758782260] [2021-12-21 20:52:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:31,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:32,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:32,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758782260] [2021-12-21 20:52:32,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758782260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:32,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373152691] [2021-12-21 20:52:32,954 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:52:32,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:32,956 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:32,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 20:52:33,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-12-21 20:52:33,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:33,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-21 20:52:33,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:33,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:36,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373152691] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:36,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:36,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2021-12-21 20:52:36,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919302500] [2021-12-21 20:52:36,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:36,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-12-21 20:52:36,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-12-21 20:52:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4160, Invalid=12096, Unknown=0, NotChecked=0, Total=16256 [2021-12-21 20:52:36,017 INFO L87 Difference]: Start difference. First operand 321 states and 368 transitions. Second operand has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 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) [2021-12-21 20:52:38,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:38,120 INFO L93 Difference]: Finished difference Result 378 states and 409 transitions. [2021-12-21 20:52:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-12-21 20:52:38,120 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 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 160 [2021-12-21 20:52:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:38,121 INFO L225 Difference]: With dead ends: 378 [2021-12-21 20:52:38,121 INFO L226 Difference]: Without dead ends: 345 [2021-12-21 20:52:38,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7534 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10175, Invalid=25735, Unknown=0, NotChecked=0, Total=35910 [2021-12-21 20:52:38,125 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 779 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:38,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 244 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:52:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-21 20:52:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2021-12-21 20:52:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.059375) internal successors, (339), 322 states have internal predecessors, (339), 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) [2021-12-21 20:52:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2021-12-21 20:52:38,134 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2021-12-21 20:52:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:38,134 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2021-12-21 20:52:38,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5039370078740157) internal successors, (318), 128 states have internal predecessors, (318), 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) [2021-12-21 20:52:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2021-12-21 20:52:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-21 20:52:38,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:38,137 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-21 20:52:38,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:38,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:38,351 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-12-21 20:52:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:38,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756821295] [2021-12-21 20:52:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:38,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:39,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:39,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756821295] [2021-12-21 20:52:39,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756821295] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:39,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280116658] [2021-12-21 20:52:39,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:52:39,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:39,273 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:39,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 20:52:39,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-21 20:52:39,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:39,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 20:52:39,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:39,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:42,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280116658] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:42,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:42,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-21 20:52:42,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979789013] [2021-12-21 20:52:42,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:42,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-21 20:52:42,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-21 20:52:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-21 20:52:42,299 INFO L87 Difference]: Start difference. First operand 323 states and 339 transitions. Second operand has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 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) [2021-12-21 20:52:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:52:42,592 INFO L93 Difference]: Finished difference Result 573 states and 620 transitions. [2021-12-21 20:52:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-21 20:52:42,592 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 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 235 [2021-12-21 20:52:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:52:42,594 INFO L225 Difference]: With dead ends: 573 [2021-12-21 20:52:42,594 INFO L226 Difference]: Without dead ends: 572 [2021-12-21 20:52:42,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-21 20:52:42,595 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 449 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:52:42,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 402 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:52:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-12-21 20:52:42,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 479. [2021-12-21 20:52:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 476 states have (on average 1.1365546218487395) internal successors, (541), 478 states have internal predecessors, (541), 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) [2021-12-21 20:52:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 541 transitions. [2021-12-21 20:52:42,609 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 541 transitions. Word has length 235 [2021-12-21 20:52:42,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:52:42,609 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 541 transitions. [2021-12-21 20:52:42,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.926315789473684) internal successors, (468), 96 states have internal predecessors, (468), 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) [2021-12-21 20:52:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 541 transitions. [2021-12-21 20:52:42,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-21 20:52:42,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:52:42,613 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1] [2021-12-21 20:52:42,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 20:52:42,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:42,827 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:52:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:52:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1975902425, now seen corresponding path program 5 times [2021-12-21 20:52:42,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:52:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132237908] [2021-12-21 20:52:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:52:42,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:52:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:52:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:46,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:52:46,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132237908] [2021-12-21 20:52:46,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132237908] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:52:46,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859861316] [2021-12-21 20:52:46,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 20:52:46,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:52:46,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:52:46,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:52:46,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 20:52:47,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2021-12-21 20:52:47,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:52:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 127 conjunts are in the unsatisfiable core [2021-12-21 20:52:47,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:52:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:47,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:52:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:52:57,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859861316] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:52:57,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 20:52:57,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2021-12-21 20:52:57,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832121086] [2021-12-21 20:52:57,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 20:52:57,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2021-12-21 20:52:57,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:52:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2021-12-21 20:52:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16255, Invalid=48007, Unknown=0, NotChecked=0, Total=64262 [2021-12-21 20:52:57,668 INFO L87 Difference]: Start difference. First operand 479 states and 541 transitions. Second operand has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 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) [2021-12-21 20:53:06,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:06,476 INFO L93 Difference]: Finished difference Result 801 states and 864 transitions. [2021-12-21 20:53:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-12-21 20:53:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 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 317 [2021-12-21 20:53:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:06,480 INFO L225 Difference]: With dead ends: 801 [2021-12-21 20:53:06,480 INFO L226 Difference]: Without dead ends: 800 [2021-12-21 20:53:06,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31126 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=40384, Invalid=103636, Unknown=0, NotChecked=0, Total=144020 [2021-12-21 20:53:06,488 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1681 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:06,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 413 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:53:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-12-21 20:53:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 641. [2021-12-21 20:53:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 638 states have (on average 1.1536050156739812) internal successors, (736), 640 states have internal predecessors, (736), 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) [2021-12-21 20:53:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 736 transitions. [2021-12-21 20:53:06,504 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 736 transitions. Word has length 317 [2021-12-21 20:53:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:06,505 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 736 transitions. [2021-12-21 20:53:06,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 2.4980237154150196) internal successors, (632), 254 states have internal predecessors, (632), 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) [2021-12-21 20:53:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 736 transitions. [2021-12-21 20:53:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-12-21 20:53:06,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:06,508 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-12-21 20:53:06,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 20:53:06,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:06,723 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-21 20:53:06,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298178, now seen corresponding path program 6 times [2021-12-21 20:53:06,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:06,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449778740] [2021-12-21 20:53:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:06,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:53:10,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449778740] [2021-12-21 20:53:10,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449778740] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 20:53:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130410760] [2021-12-21 20:53:10,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 20:53:10,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:10,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:53:10,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 20:53:11,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-12-21 20:53:11,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 20:53:11,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 128 conjunts are in the unsatisfiable core [2021-12-21 20:53:11,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:53:11,669 INFO L328 TraceCheckSpWp]: Computing backward predicates...