/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:16:29,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:16:29,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:16:29,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:16:29,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:16:29,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:16:29,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:16:29,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:16:29,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:16:29,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:16:29,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:16:29,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:16:29,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:16:29,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:16:29,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:16:29,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:16:29,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:16:29,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:16:29,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:16:29,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:16:29,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:16:29,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:16:29,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:16:29,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:16:29,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:16:29,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:16:29,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:16:29,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:16:29,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:16:29,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:16:29,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:16:29,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:16:29,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:16:29,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:16:29,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:16:29,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:16:29,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:16:29,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:16:29,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:16:29,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:16:29,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:16:29,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:16:29,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:16:29,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:16:29,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:16:29,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:16:29,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:16:29,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:16:29,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:16:29,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:16:29,946 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:16:29,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:16:29,947 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:16:29,947 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:16:29,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:16:29,949 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:16:29,949 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:16:29,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:16:29,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:16:29,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:16:29,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:16:29,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:16:29,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:16:29,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:16:29,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:16:29,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:16:29,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:16:29,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:16:29,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:16:29,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:16:29,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:16:30,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:16:30,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:16:30,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:16:30,415 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:16:30,416 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:16:30,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-2.i [2022-10-16 14:16:30,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad81352/8c5d4dba796941c1a2df0b483925cf75/FLAG803f489b7 [2022-10-16 14:16:31,179 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:16:31,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-2.i [2022-10-16 14:16:31,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad81352/8c5d4dba796941c1a2df0b483925cf75/FLAG803f489b7 [2022-10-16 14:16:31,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad81352/8c5d4dba796941c1a2df0b483925cf75 [2022-10-16 14:16:31,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:16:31,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:16:31,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:16:31,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:16:31,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:16:31,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:31,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469e0392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31, skipping insertion in model container [2022-10-16 14:16:31,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:31,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:16:31,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:16:31,857 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/list-ext3-properties/sll_of_sll_nondet_append-2.i[25013,25026] [2022-10-16 14:16:31,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:16:31,868 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:16:31,920 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/list-ext3-properties/sll_of_sll_nondet_append-2.i[25013,25026] [2022-10-16 14:16:31,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:16:31,959 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:16:31,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31 WrapperNode [2022-10-16 14:16:31,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:16:31,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:16:31,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:16:31,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:16:31,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:31,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,023 INFO L138 Inliner]: procedures = 129, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 194 [2022-10-16 14:16:32,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:16:32,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:16:32,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:16:32,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:16:32,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:16:32,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:16:32,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:16:32,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:16:32,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (1/1) ... [2022-10-16 14:16:32,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:16:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:32,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 14:16:32,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 14:16:32,186 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-10-16 14:16:32,187 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-10-16 14:16:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:16:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:16:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:16:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:16:32,187 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2022-10-16 14:16:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2022-10-16 14:16:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:16:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:16:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 14:16:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:16:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:16:32,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:16:32,320 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:16:32,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:16:32,403 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-10-16 14:16:32,825 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:16:32,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:16:32,833 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-10-16 14:16:32,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:16:32 BoogieIcfgContainer [2022-10-16 14:16:32,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:16:32,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:16:32,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:16:32,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:16:32,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:16:31" (1/3) ... [2022-10-16 14:16:32,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30166c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:16:32, skipping insertion in model container [2022-10-16 14:16:32,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:16:31" (2/3) ... [2022-10-16 14:16:32,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30166c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:16:32, skipping insertion in model container [2022-10-16 14:16:32,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:16:32" (3/3) ... [2022-10-16 14:16:32,845 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-2.i [2022-10-16 14:16:32,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:16:32,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-16 14:16:32,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:16:32,937 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7200adfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:16:32,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-16 14:16:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 57 states have (on average 1.7017543859649122) internal successors, (97), 72 states have internal predecessors, (97), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 14:16:32,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:32,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 14:16:32,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:32,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1511943652, now seen corresponding path program 1 times [2022-10-16 14:16:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:32,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366141766] [2022-10-16 14:16:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:33,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366141766] [2022-10-16 14:16:33,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366141766] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:33,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:33,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:16:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099618345] [2022-10-16 14:16:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:33,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 14:16:33,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 14:16:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 14:16:33,193 INFO L87 Difference]: Start difference. First operand has 77 states, 57 states have (on average 1.7017543859649122) internal successors, (97), 72 states have internal predecessors, (97), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-10-16 14:16:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:33,228 INFO L93 Difference]: Finished difference Result 152 states and 206 transitions. [2022-10-16 14:16:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 14:16:33,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2022-10-16 14:16:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:33,239 INFO L225 Difference]: With dead ends: 152 [2022-10-16 14:16:33,240 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 14:16:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 14:16:33,249 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:33,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 14:16:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-10-16 14:16:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 60 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-10-16 14:16:33,298 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 6 [2022-10-16 14:16:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:33,299 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-10-16 14:16:33,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-10-16 14:16:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-10-16 14:16:33,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 14:16:33,300 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:33,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:33,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:16:33,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:33,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1297950226, now seen corresponding path program 1 times [2022-10-16 14:16:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:33,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133543197] [2022-10-16 14:16:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133543197] [2022-10-16 14:16:33,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133543197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:33,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:33,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:16:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270729579] [2022-10-16 14:16:33,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:16:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:16:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:16:33,505 INFO L87 Difference]: Start difference. First operand 64 states and 75 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) [2022-10-16 14:16:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:33,627 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2022-10-16 14:16:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:16:33,628 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 [2022-10-16 14:16:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:33,630 INFO L225 Difference]: With dead ends: 81 [2022-10-16 14:16:33,630 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 14:16:33,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:16:33,633 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 16 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:33,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 191 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 14:16:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2022-10-16 14:16:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 69 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2022-10-16 14:16:33,650 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 8 [2022-10-16 14:16:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:33,651 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2022-10-16 14:16:33,651 INFO L496 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) [2022-10-16 14:16:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2022-10-16 14:16:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 14:16:33,652 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:33,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:16:33,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1581751208, now seen corresponding path program 1 times [2022-10-16 14:16:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:33,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308630541] [2022-10-16 14:16:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:33,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308630541] [2022-10-16 14:16:33,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308630541] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:33,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:33,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:16:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087887862] [2022-10-16 14:16:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:33,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:16:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:33,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:16:33,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:16:33,806 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:33,869 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2022-10-16 14:16:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:16:33,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-16 14:16:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:33,871 INFO L225 Difference]: With dead ends: 80 [2022-10-16 14:16:33,871 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 14:16:33,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:16:33,874 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 13 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:33,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 202 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 14:16:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-10-16 14:16:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 70 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:33,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2022-10-16 14:16:33,886 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 9 [2022-10-16 14:16:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:33,886 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2022-10-16 14:16:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2022-10-16 14:16:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 14:16:33,888 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:33,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:16:33,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -266727245, now seen corresponding path program 1 times [2022-10-16 14:16:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:33,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357725120] [2022-10-16 14:16:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357725120] [2022-10-16 14:16:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357725120] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:33,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:33,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:16:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834484968] [2022-10-16 14:16:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:16:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:16:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:16:33,988 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:34,023 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2022-10-16 14:16:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:16:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 14:16:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:34,025 INFO L225 Difference]: With dead ends: 124 [2022-10-16 14:16:34,025 INFO L226 Difference]: Without dead ends: 77 [2022-10-16 14:16:34,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:16:34,028 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:34,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-16 14:16:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-10-16 14:16:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 70 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2022-10-16 14:16:34,039 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 11 [2022-10-16 14:16:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:34,040 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2022-10-16 14:16:34,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2022-10-16 14:16:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 14:16:34,041 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:34,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:34,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:16:34,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -294640449, now seen corresponding path program 1 times [2022-10-16 14:16:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:34,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940648067] [2022-10-16 14:16:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:34,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940648067] [2022-10-16 14:16:34,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940648067] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:34,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:34,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:16:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065329605] [2022-10-16 14:16:34,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:16:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:16:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:16:34,328 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:34,459 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2022-10-16 14:16:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:16:34,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 14:16:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:34,465 INFO L225 Difference]: With dead ends: 96 [2022-10-16 14:16:34,465 INFO L226 Difference]: Without dead ends: 95 [2022-10-16 14:16:34,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:16:34,473 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 74 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:34,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 368 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-16 14:16:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2022-10-16 14:16:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 86 states have internal predecessors, (105), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2022-10-16 14:16:34,511 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 14 [2022-10-16 14:16:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:34,511 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2022-10-16 14:16:34,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2022-10-16 14:16:34,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 14:16:34,515 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:34,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 14:16:34,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -543919263, now seen corresponding path program 1 times [2022-10-16 14:16:34,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:34,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922150738] [2022-10-16 14:16:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:34,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:34,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922150738] [2022-10-16 14:16:34,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922150738] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:34,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:34,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:16:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473527493] [2022-10-16 14:16:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:16:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:16:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:16:34,758 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:34,879 INFO L93 Difference]: Finished difference Result 189 states and 227 transitions. [2022-10-16 14:16:34,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:16:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-16 14:16:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:34,882 INFO L225 Difference]: With dead ends: 189 [2022-10-16 14:16:34,882 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 14:16:34,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:16:34,884 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 60 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:34,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 431 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 14:16:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2022-10-16 14:16:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 91 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2022-10-16 14:16:34,897 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 15 [2022-10-16 14:16:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:34,898 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2022-10-16 14:16:34,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:34,898 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2022-10-16 14:16:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 14:16:34,899 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:34,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 14:16:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 14:16:34,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:34,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1302325764, now seen corresponding path program 1 times [2022-10-16 14:16:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:34,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697023938] [2022-10-16 14:16:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:34,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697023938] [2022-10-16 14:16:34,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697023938] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:34,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168732040] [2022-10-16 14:16:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:34,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:35,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:16:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:35,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:16:35,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:35,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:35,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168732040] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:35,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:35,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-16 14:16:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745117024] [2022-10-16 14:16:35,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:35,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 14:16:35,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 14:16:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:16:35,179 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:35,323 INFO L93 Difference]: Finished difference Result 153 states and 187 transitions. [2022-10-16 14:16:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:16:35,324 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-16 14:16:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:35,326 INFO L225 Difference]: With dead ends: 153 [2022-10-16 14:16:35,327 INFO L226 Difference]: Without dead ends: 152 [2022-10-16 14:16:35,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-10-16 14:16:35,328 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 91 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:35,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 288 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-10-16 14:16:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 129. [2022-10-16 14:16:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.4579439252336448) internal successors, (156), 120 states have internal predecessors, (156), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 14:16:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 168 transitions. [2022-10-16 14:16:35,342 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 168 transitions. Word has length 15 [2022-10-16 14:16:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:35,343 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 168 transitions. [2022-10-16 14:16:35,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 168 transitions. [2022-10-16 14:16:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 14:16:35,344 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:35,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-10-16 14:16:35,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:35,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:35,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393154, now seen corresponding path program 1 times [2022-10-16 14:16:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:35,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401626752] [2022-10-16 14:16:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401626752] [2022-10-16 14:16:35,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401626752] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537262481] [2022-10-16 14:16:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:35,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:35,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:35,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:35,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:16:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:35,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:16:35,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:35,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537262481] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-10-16 14:16:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346846914] [2022-10-16 14:16:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:16:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:16:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:16:35,724 INFO L87 Difference]: Start difference. First operand 129 states and 168 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2022-10-16 14:16:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:35,782 INFO L93 Difference]: Finished difference Result 131 states and 168 transitions. [2022-10-16 14:16:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:16:35,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-16 14:16:35,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:35,785 INFO L225 Difference]: With dead ends: 131 [2022-10-16 14:16:35,785 INFO L226 Difference]: Without dead ends: 130 [2022-10-16 14:16:35,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:16:35,786 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 26 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 284 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 [2022-10-16 14:16:35,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 284 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:35,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-16 14:16:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2022-10-16 14:16:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.4299065420560748) internal successors, (153), 119 states have internal predecessors, (153), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 14:16:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2022-10-16 14:16:35,798 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 16 [2022-10-16 14:16:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:35,798 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2022-10-16 14:16:35,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2022-10-16 14:16:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2022-10-16 14:16:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:16:35,800 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:35,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:35,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-16 14:16:36,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash 525140189, now seen corresponding path program 1 times [2022-10-16 14:16:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:36,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268749946] [2022-10-16 14:16:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:36,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268749946] [2022-10-16 14:16:36,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268749946] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:36,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728793373] [2022-10-16 14:16:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:36,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:36,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:36,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:36,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 14:16:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:16:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:36,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:36,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728793373] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:36,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:36,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-10-16 14:16:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569724083] [2022-10-16 14:16:36,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 14:16:36,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 14:16:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:16:36,430 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:36,723 INFO L93 Difference]: Finished difference Result 207 states and 250 transitions. [2022-10-16 14:16:36,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 14:16:36,724 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-16 14:16:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:36,725 INFO L225 Difference]: With dead ends: 207 [2022-10-16 14:16:36,725 INFO L226 Difference]: Without dead ends: 160 [2022-10-16 14:16:36,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2022-10-16 14:16:36,729 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 223 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:36,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 465 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:36,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-10-16 14:16:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 145. [2022-10-16 14:16:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 123 states have (on average 1.3902439024390243) internal successors, (171), 135 states have internal predecessors, (171), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 14:16:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 183 transitions. [2022-10-16 14:16:36,753 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 183 transitions. Word has length 18 [2022-10-16 14:16:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:36,753 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 183 transitions. [2022-10-16 14:16:36,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 183 transitions. [2022-10-16 14:16:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-16 14:16:36,757 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:36,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:36,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:36,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:36,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1564897801, now seen corresponding path program 1 times [2022-10-16 14:16:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:36,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018041596] [2022-10-16 14:16:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:16:37,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:37,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018041596] [2022-10-16 14:16:37,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018041596] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:37,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:37,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:16:37,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416997136] [2022-10-16 14:16:37,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:37,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:16:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:16:37,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:16:37,035 INFO L87 Difference]: Start difference. First operand 145 states and 183 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:37,057 INFO L93 Difference]: Finished difference Result 145 states and 183 transitions. [2022-10-16 14:16:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:16:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-10-16 14:16:37,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:37,059 INFO L225 Difference]: With dead ends: 145 [2022-10-16 14:16:37,059 INFO L226 Difference]: Without dead ends: 144 [2022-10-16 14:16:37,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:16:37,060 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 4 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:37,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 202 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-10-16 14:16:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2022-10-16 14:16:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 130 states have internal predecessors, (164), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 14:16:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2022-10-16 14:16:37,070 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 20 [2022-10-16 14:16:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:37,070 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2022-10-16 14:16:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2022-10-16 14:16:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 14:16:37,072 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:37,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 14:16:37,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2027271083, now seen corresponding path program 1 times [2022-10-16 14:16:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:37,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545881836] [2022-10-16 14:16:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545881836] [2022-10-16 14:16:37,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545881836] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415834716] [2022-10-16 14:16:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:37,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:37,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 14:16:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:37,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 14:16:37,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:37,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415834716] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:37,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:37,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-10-16 14:16:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190810657] [2022-10-16 14:16:37,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:16:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:16:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:16:37,466 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:37,819 INFO L93 Difference]: Finished difference Result 171 states and 207 transitions. [2022-10-16 14:16:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 14:16:37,820 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-16 14:16:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:37,827 INFO L225 Difference]: With dead ends: 171 [2022-10-16 14:16:37,827 INFO L226 Difference]: Without dead ends: 170 [2022-10-16 14:16:37,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-10-16 14:16:37,829 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 193 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:37,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 639 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-16 14:16:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 156. [2022-10-16 14:16:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 135 states have (on average 1.348148148148148) internal successors, (182), 145 states have internal predecessors, (182), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 14:16:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 194 transitions. [2022-10-16 14:16:37,846 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 194 transitions. Word has length 21 [2022-10-16 14:16:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:37,847 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 194 transitions. [2022-10-16 14:16:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 194 transitions. [2022-10-16 14:16:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 14:16:37,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:37,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:37,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:38,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:38,062 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:38,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:38,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2025843208, now seen corresponding path program 1 times [2022-10-16 14:16:38,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:38,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451904284] [2022-10-16 14:16:38,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:38,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 14:16:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:16:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:38,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451904284] [2022-10-16 14:16:38,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451904284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:38,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:38,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:16:38,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914397148] [2022-10-16 14:16:38,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:38,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:16:38,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:38,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:16:38,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:16:38,223 INFO L87 Difference]: Start difference. First operand 156 states and 194 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:38,291 INFO L93 Difference]: Finished difference Result 240 states and 308 transitions. [2022-10-16 14:16:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:16:38,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-10-16 14:16:38,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:38,294 INFO L225 Difference]: With dead ends: 240 [2022-10-16 14:16:38,294 INFO L226 Difference]: Without dead ends: 238 [2022-10-16 14:16:38,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:16:38,295 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:38,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 257 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-10-16 14:16:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 191. [2022-10-16 14:16:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 165 states have (on average 1.3454545454545455) internal successors, (222), 175 states have internal predecessors, (222), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-16 14:16:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 244 transitions. [2022-10-16 14:16:38,312 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 244 transitions. Word has length 24 [2022-10-16 14:16:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:38,312 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 244 transitions. [2022-10-16 14:16:38,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 244 transitions. [2022-10-16 14:16:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 14:16:38,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:38,314 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-10-16 14:16:38,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 14:16:38,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1479663726, now seen corresponding path program 2 times [2022-10-16 14:16:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:38,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191242485] [2022-10-16 14:16:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:16:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191242485] [2022-10-16 14:16:38,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191242485] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:38,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868390824] [2022-10-16 14:16:38,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:16:38,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:38,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:38,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 14:16:38,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 14:16:38,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:38,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:16:38,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 14:16:38,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 14:16:38,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868390824] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:38,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:38,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 15 [2022-10-16 14:16:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175520851] [2022-10-16 14:16:38,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:38,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 14:16:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 14:16:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:16:38,648 INFO L87 Difference]: Start difference. First operand 191 states and 244 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:38,876 INFO L93 Difference]: Finished difference Result 263 states and 320 transitions. [2022-10-16 14:16:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 14:16:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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 36 [2022-10-16 14:16:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:38,878 INFO L225 Difference]: With dead ends: 263 [2022-10-16 14:16:38,878 INFO L226 Difference]: Without dead ends: 164 [2022-10-16 14:16:38,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-10-16 14:16:38,880 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 128 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:38,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 541 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-10-16 14:16:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 155. [2022-10-16 14:16:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.3037037037037038) internal successors, (176), 143 states have internal predecessors, (176), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2022-10-16 14:16:38,910 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 36 [2022-10-16 14:16:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2022-10-16 14:16:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2022-10-16 14:16:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:16:38,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:38,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:38,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 14:16:39,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 14:16:39,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1013563589, now seen corresponding path program 1 times [2022-10-16 14:16:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:39,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734158295] [2022-10-16 14:16:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:39,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 14:16:39,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:39,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734158295] [2022-10-16 14:16:39,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734158295] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:39,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971177250] [2022-10-16 14:16:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:39,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:39,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:39,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:39,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 14:16:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:39,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:16:39,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 14:16:39,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:39,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971177250] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:39,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:39,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2022-10-16 14:16:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997767447] [2022-10-16 14:16:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:16:39,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:16:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:16:39,630 INFO L87 Difference]: Start difference. First operand 155 states and 190 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:39,694 INFO L93 Difference]: Finished difference Result 227 states and 277 transitions. [2022-10-16 14:16:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:16:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-10-16 14:16:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:39,701 INFO L225 Difference]: With dead ends: 227 [2022-10-16 14:16:39,702 INFO L226 Difference]: Without dead ends: 192 [2022-10-16 14:16:39,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-16 14:16:39,703 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 79 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 268 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-10-16 14:16:39,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 156. [2022-10-16 14:16:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 136 states have (on average 1.3014705882352942) internal successors, (177), 144 states have internal predecessors, (177), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-10-16 14:16:39,720 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 41 [2022-10-16 14:16:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:39,721 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-10-16 14:16:39,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-10-16 14:16:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 14:16:39,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:39,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:39,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:39,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1115883758, now seen corresponding path program 1 times [2022-10-16 14:16:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:39,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404918031] [2022-10-16 14:16:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:39,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 14:16:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 14:16:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:16:40,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:40,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404918031] [2022-10-16 14:16:40,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404918031] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:40,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:40,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 14:16:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027128621] [2022-10-16 14:16:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:40,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:16:40,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:16:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:16:40,080 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:40,162 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2022-10-16 14:16:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:16:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-10-16 14:16:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:40,164 INFO L225 Difference]: With dead ends: 198 [2022-10-16 14:16:40,164 INFO L226 Difference]: Without dead ends: 197 [2022-10-16 14:16:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:16:40,165 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 45 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 290 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-10-16 14:16:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 155. [2022-10-16 14:16:40,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 143 states have internal predecessors, (174), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 188 transitions. [2022-10-16 14:16:40,184 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 188 transitions. Word has length 43 [2022-10-16 14:16:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:40,184 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 188 transitions. [2022-10-16 14:16:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 188 transitions. [2022-10-16 14:16:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 14:16:40,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:40,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 14:16:40,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 232658256, now seen corresponding path program 1 times [2022-10-16 14:16:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:40,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437912084] [2022-10-16 14:16:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 14:16:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 14:16:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:16:40,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:40,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437912084] [2022-10-16 14:16:40,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437912084] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295248571] [2022-10-16 14:16:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:40,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:40,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:40,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:40,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 14:16:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:40,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:16:40,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:16:40,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:40,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295248571] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:40,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:40,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 15 [2022-10-16 14:16:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109757282] [2022-10-16 14:16:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:40,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 14:16:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 14:16:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:16:40,721 INFO L87 Difference]: Start difference. First operand 155 states and 188 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:40,861 INFO L93 Difference]: Finished difference Result 304 states and 365 transitions. [2022-10-16 14:16:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:16:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-16 14:16:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:40,864 INFO L225 Difference]: With dead ends: 304 [2022-10-16 14:16:40,864 INFO L226 Difference]: Without dead ends: 174 [2022-10-16 14:16:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-10-16 14:16:40,866 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 387 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-10-16 14:16:40,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 157. [2022-10-16 14:16:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.2753623188405796) internal successors, (176), 145 states have internal predecessors, (176), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:40,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2022-10-16 14:16:40,884 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 44 [2022-10-16 14:16:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:40,885 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2022-10-16 14:16:40,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2022-10-16 14:16:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 14:16:40,887 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:40,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:40,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:41,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:41,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 350391767, now seen corresponding path program 1 times [2022-10-16 14:16:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:41,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195318488] [2022-10-16 14:16:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:41,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 14:16:41,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:41,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195318488] [2022-10-16 14:16:41,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195318488] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:41,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:41,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:16:41,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629570251] [2022-10-16 14:16:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:41,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:16:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:41,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:16:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:16:41,210 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:41,273 INFO L93 Difference]: Finished difference Result 189 states and 227 transitions. [2022-10-16 14:16:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:16:41,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-10-16 14:16:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:41,275 INFO L225 Difference]: With dead ends: 189 [2022-10-16 14:16:41,275 INFO L226 Difference]: Without dead ends: 164 [2022-10-16 14:16:41,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:16:41,276 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 25 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:41,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 170 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:41,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-10-16 14:16:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 158. [2022-10-16 14:16:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.2733812949640289) internal successors, (177), 146 states have internal predecessors, (177), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:41,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2022-10-16 14:16:41,294 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 46 [2022-10-16 14:16:41,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:41,295 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2022-10-16 14:16:41,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:41,295 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2022-10-16 14:16:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 14:16:41,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:41,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:41,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 14:16:41,296 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 350392473, now seen corresponding path program 1 times [2022-10-16 14:16:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500247385] [2022-10-16 14:16:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-16 14:16:41,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:41,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500247385] [2022-10-16 14:16:41,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500247385] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:41,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:41,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:16:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143263940] [2022-10-16 14:16:41,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:41,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:16:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:16:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:16:41,394 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:41,448 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2022-10-16 14:16:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:16:41,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-10-16 14:16:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:41,450 INFO L225 Difference]: With dead ends: 184 [2022-10-16 14:16:41,450 INFO L226 Difference]: Without dead ends: 182 [2022-10-16 14:16:41,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:16:41,451 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 26 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:41,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 245 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-16 14:16:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 161. [2022-10-16 14:16:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.2746478873239437) internal successors, (181), 149 states have internal predecessors, (181), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 195 transitions. [2022-10-16 14:16:41,467 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 195 transitions. Word has length 46 [2022-10-16 14:16:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:41,467 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 195 transitions. [2022-10-16 14:16:41,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 195 transitions. [2022-10-16 14:16:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 14:16:41,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:41,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 14:16:41,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 14:16:41,469 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1647572486, now seen corresponding path program 1 times [2022-10-16 14:16:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:41,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373673175] [2022-10-16 14:16:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 14:16:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-16 14:16:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:16:41,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:41,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373673175] [2022-10-16 14:16:41,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373673175] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:41,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197878252] [2022-10-16 14:16:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:41,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:41,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:41,761 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) [2022-10-16 14:16:41,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 14:16:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:41,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:16:41,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 14:16:41,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:16:42,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197878252] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:42,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:42,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-10-16 14:16:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555284700] [2022-10-16 14:16:42,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:16:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:16:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:16:42,176 INFO L87 Difference]: Start difference. First operand 161 states and 195 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 14:16:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:42,362 INFO L93 Difference]: Finished difference Result 388 states and 467 transitions. [2022-10-16 14:16:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 14:16:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2022-10-16 14:16:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:42,364 INFO L225 Difference]: With dead ends: 388 [2022-10-16 14:16:42,365 INFO L226 Difference]: Without dead ends: 225 [2022-10-16 14:16:42,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-10-16 14:16:42,366 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 135 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:42,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 583 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-10-16 14:16:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 166. [2022-10-16 14:16:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 147 states have (on average 1.2653061224489797) internal successors, (186), 154 states have internal predecessors, (186), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-10-16 14:16:42,386 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 47 [2022-10-16 14:16:42,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:42,387 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-10-16 14:16:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-16 14:16:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-10-16 14:16:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 14:16:42,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:42,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:42,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:42,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1771806519, now seen corresponding path program 1 times [2022-10-16 14:16:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:42,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503718438] [2022-10-16 14:16:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:16:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:42,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503718438] [2022-10-16 14:16:42,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503718438] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:42,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809018579] [2022-10-16 14:16:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:42,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:42,900 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) [2022-10-16 14:16:42,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 14:16:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 14:16:43,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 14:16:43,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 14:16:43,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809018579] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:43,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:43,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-10-16 14:16:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390472809] [2022-10-16 14:16:43,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:43,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:16:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:43,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:16:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:16:43,325 INFO L87 Difference]: Start difference. First operand 166 states and 200 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:43,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:43,526 INFO L93 Difference]: Finished difference Result 255 states and 304 transitions. [2022-10-16 14:16:43,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 14:16:43,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-10-16 14:16:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:43,528 INFO L225 Difference]: With dead ends: 255 [2022-10-16 14:16:43,529 INFO L226 Difference]: Without dead ends: 216 [2022-10-16 14:16:43,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-10-16 14:16:43,530 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 154 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:43,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 502 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-10-16 14:16:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 171. [2022-10-16 14:16:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 152 states have (on average 1.256578947368421) internal successors, (191), 159 states have internal predecessors, (191), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:43,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 205 transitions. [2022-10-16 14:16:43,550 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 205 transitions. Word has length 49 [2022-10-16 14:16:43,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:43,551 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 205 transitions. [2022-10-16 14:16:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:43,551 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 205 transitions. [2022-10-16 14:16:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 14:16:43,552 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:43,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:43,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:43,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -264791760, now seen corresponding path program 1 times [2022-10-16 14:16:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:43,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457098712] [2022-10-16 14:16:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 14:16:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 14:16:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:16:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:44,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457098712] [2022-10-16 14:16:44,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457098712] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317163919] [2022-10-16 14:16:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:44,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:44,115 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) [2022-10-16 14:16:44,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 14:16:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:44,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 14:16:44,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 14:16:44,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:16:44,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317163919] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:44,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:44,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 21 [2022-10-16 14:16:44,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191857693] [2022-10-16 14:16:44,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:44,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 14:16:44,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 14:16:44,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:16:44,607 INFO L87 Difference]: Start difference. First operand 171 states and 205 transitions. Second operand has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:44,903 INFO L93 Difference]: Finished difference Result 339 states and 402 transitions. [2022-10-16 14:16:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 14:16:44,903 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2022-10-16 14:16:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:44,905 INFO L225 Difference]: With dead ends: 339 [2022-10-16 14:16:44,905 INFO L226 Difference]: Without dead ends: 198 [2022-10-16 14:16:44,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-10-16 14:16:44,907 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 111 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:44,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 787 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-10-16 14:16:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 181. [2022-10-16 14:16:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 162 states have (on average 1.2407407407407407) internal successors, (201), 169 states have internal predecessors, (201), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 215 transitions. [2022-10-16 14:16:44,929 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 215 transitions. Word has length 54 [2022-10-16 14:16:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:44,930 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 215 transitions. [2022-10-16 14:16:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.571428571428571) internal successors, (96), 20 states have internal predecessors, (96), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 215 transitions. [2022-10-16 14:16:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 14:16:44,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:44,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:44,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:45,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-10-16 14:16:45,151 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:45,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2084095415, now seen corresponding path program 2 times [2022-10-16 14:16:45,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:45,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573994894] [2022-10-16 14:16:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 14:16:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573994894] [2022-10-16 14:16:45,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573994894] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474328465] [2022-10-16 14:16:45,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:16:45,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:45,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:45,281 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) [2022-10-16 14:16:45,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 14:16:45,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:16:45,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:45,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 14:16:45,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 14:16:45,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 14:16:45,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474328465] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:45,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:45,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 21 [2022-10-16 14:16:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583168779] [2022-10-16 14:16:45,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:45,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 14:16:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:45,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 14:16:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:16:45,868 INFO L87 Difference]: Start difference. First operand 181 states and 215 transitions. Second operand has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 20 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:46,238 INFO L93 Difference]: Finished difference Result 329 states and 391 transitions. [2022-10-16 14:16:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 14:16:46,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 20 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2022-10-16 14:16:46,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:46,241 INFO L225 Difference]: With dead ends: 329 [2022-10-16 14:16:46,241 INFO L226 Difference]: Without dead ends: 290 [2022-10-16 14:16:46,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 14:16:46,242 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 239 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:46,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 761 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-10-16 14:16:46,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 188. [2022-10-16 14:16:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 176 states have internal predecessors, (209), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2022-10-16 14:16:46,262 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 54 [2022-10-16 14:16:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:46,262 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2022-10-16 14:16:46,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9523809523809526) internal successors, (83), 20 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2022-10-16 14:16:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 14:16:46,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:46,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 14:16:46,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:46,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 14:16:46,477 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1422628134, now seen corresponding path program 2 times [2022-10-16 14:16:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:46,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856106531] [2022-10-16 14:16:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 14:16:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 14:16:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 14:16:46,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:46,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856106531] [2022-10-16 14:16:46,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856106531] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:46,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365075741] [2022-10-16 14:16:46,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:16:46,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:46,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:46,892 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) [2022-10-16 14:16:46,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 14:16:47,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:16:47,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:47,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 14:16:47,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 14:16:47,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 14:16:47,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365075741] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:47,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:47,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2022-10-16 14:16:47,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857897070] [2022-10-16 14:16:47,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:47,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 14:16:47,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 14:16:47,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:16:47,395 INFO L87 Difference]: Start difference. First operand 188 states and 223 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:47,631 INFO L93 Difference]: Finished difference Result 428 states and 506 transitions. [2022-10-16 14:16:47,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 14:16:47,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2022-10-16 14:16:47,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:47,633 INFO L225 Difference]: With dead ends: 428 [2022-10-16 14:16:47,633 INFO L226 Difference]: Without dead ends: 238 [2022-10-16 14:16:47,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-10-16 14:16:47,635 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 118 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:47,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 619 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-10-16 14:16:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 193. [2022-10-16 14:16:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 174 states have (on average 1.2298850574712643) internal successors, (214), 181 states have internal predecessors, (214), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2022-10-16 14:16:47,657 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 57 [2022-10-16 14:16:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:47,657 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2022-10-16 14:16:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2022-10-16 14:16:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 14:16:47,659 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:47,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:47,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:47,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 14:16:47,875 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1643551384, now seen corresponding path program 1 times [2022-10-16 14:16:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:47,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99285218] [2022-10-16 14:16:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:47,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:47,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:47,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99285218] [2022-10-16 14:16:47,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99285218] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:47,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:16:47,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:16:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872836230] [2022-10-16 14:16:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:16:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:16:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:16:48,001 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:48,093 INFO L93 Difference]: Finished difference Result 255 states and 302 transitions. [2022-10-16 14:16:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:16:48,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-10-16 14:16:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:48,095 INFO L225 Difference]: With dead ends: 255 [2022-10-16 14:16:48,095 INFO L226 Difference]: Without dead ends: 224 [2022-10-16 14:16:48,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:16:48,097 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 62 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:48,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 318 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:48,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-10-16 14:16:48,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 197. [2022-10-16 14:16:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 185 states have internal predecessors, (219), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 233 transitions. [2022-10-16 14:16:48,115 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 233 transitions. Word has length 60 [2022-10-16 14:16:48,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:48,116 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 233 transitions. [2022-10-16 14:16:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:48,116 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 233 transitions. [2022-10-16 14:16:48,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 14:16:48,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:48,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:48,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-16 14:16:48,118 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:48,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1592027881, now seen corresponding path program 1 times [2022-10-16 14:16:48,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:48,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209300516] [2022-10-16 14:16:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:48,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209300516] [2022-10-16 14:16:48,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209300516] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819399545] [2022-10-16 14:16:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:48,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:48,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:48,303 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) [2022-10-16 14:16:48,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 14:16:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:48,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:16:48,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:48,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819399545] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:48,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:48,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-10-16 14:16:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974552532] [2022-10-16 14:16:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:16:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:16:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:16:48,493 INFO L87 Difference]: Start difference. First operand 197 states and 233 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:48,540 INFO L93 Difference]: Finished difference Result 213 states and 250 transitions. [2022-10-16 14:16:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:16:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-10-16 14:16:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:48,542 INFO L225 Difference]: With dead ends: 213 [2022-10-16 14:16:48,542 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 14:16:48,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:16:48,543 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:48,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 266 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 14:16:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 196. [2022-10-16 14:16:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 178 states have (on average 1.2247191011235956) internal successors, (218), 184 states have internal predecessors, (218), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2022-10-16 14:16:48,565 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 60 [2022-10-16 14:16:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:48,565 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2022-10-16 14:16:48,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2022-10-16 14:16:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-16 14:16:48,567 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:48,567 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:48,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 14:16:48,781 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 589427965, now seen corresponding path program 1 times [2022-10-16 14:16:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:48,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081961937] [2022-10-16 14:16:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:48,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 14:16:49,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:49,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081961937] [2022-10-16 14:16:49,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081961937] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:49,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129151705] [2022-10-16 14:16:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:49,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:49,033 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) [2022-10-16 14:16:49,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 14:16:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:49,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:16:49,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:49,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:49,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129151705] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:49,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:49,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-10-16 14:16:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830007036] [2022-10-16 14:16:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:49,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:16:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:16:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:16:49,292 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:49,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:49,419 INFO L93 Difference]: Finished difference Result 263 states and 314 transitions. [2022-10-16 14:16:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 14:16:49,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-10-16 14:16:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:49,422 INFO L225 Difference]: With dead ends: 263 [2022-10-16 14:16:49,422 INFO L226 Difference]: Without dead ends: 222 [2022-10-16 14:16:49,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-10-16 14:16:49,424 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:49,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 256 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-10-16 14:16:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 214. [2022-10-16 14:16:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 196 states have (on average 1.2346938775510203) internal successors, (242), 202 states have internal predecessors, (242), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2022-10-16 14:16:49,448 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 61 [2022-10-16 14:16:49,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:49,448 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2022-10-16 14:16:49,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2022-10-16 14:16:49,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-16 14:16:49,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:49,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:49,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:49,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:49,664 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash -930430823, now seen corresponding path program 3 times [2022-10-16 14:16:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640753880] [2022-10-16 14:16:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:49,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640753880] [2022-10-16 14:16:49,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640753880] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361668142] [2022-10-16 14:16:49,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:16:49,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:49,840 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) [2022-10-16 14:16:49,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 14:16:50,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 14:16:50,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:50,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 14:16:50,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:50,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:50,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361668142] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:50,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:50,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2022-10-16 14:16:50,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71262992] [2022-10-16 14:16:50,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:50,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:16:50,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:50,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:16:50,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:16:50,161 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand has 17 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:50,361 INFO L93 Difference]: Finished difference Result 394 states and 482 transitions. [2022-10-16 14:16:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:16:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-10-16 14:16:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:50,365 INFO L225 Difference]: With dead ends: 394 [2022-10-16 14:16:50,365 INFO L226 Difference]: Without dead ends: 393 [2022-10-16 14:16:50,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-10-16 14:16:50,367 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 171 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:50,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 768 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:16:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-10-16 14:16:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 238. [2022-10-16 14:16:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 220 states have (on average 1.2454545454545454) internal successors, (274), 226 states have internal predecessors, (274), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 288 transitions. [2022-10-16 14:16:50,399 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 288 transitions. Word has length 62 [2022-10-16 14:16:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:50,400 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 288 transitions. [2022-10-16 14:16:50,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:50,400 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 288 transitions. [2022-10-16 14:16:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-16 14:16:50,401 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:50,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:50,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 14:16:50,617 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:50,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1169892230, now seen corresponding path program 1 times [2022-10-16 14:16:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:50,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651499655] [2022-10-16 14:16:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 14:16:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:50,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651499655] [2022-10-16 14:16:50,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651499655] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:50,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649308491] [2022-10-16 14:16:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:50,838 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) [2022-10-16 14:16:50,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 14:16:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:16:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:51,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:51,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649308491] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:51,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:51,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2022-10-16 14:16:51,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961839954] [2022-10-16 14:16:51,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:51,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:16:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:16:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:16:51,138 INFO L87 Difference]: Start difference. First operand 238 states and 288 transitions. Second operand has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:52,219 INFO L93 Difference]: Finished difference Result 549 states and 677 transitions. [2022-10-16 14:16:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 14:16:52,221 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-10-16 14:16:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:52,224 INFO L225 Difference]: With dead ends: 549 [2022-10-16 14:16:52,224 INFO L226 Difference]: Without dead ends: 503 [2022-10-16 14:16:52,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=974, Invalid=3856, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 14:16:52,228 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 553 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:52,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 732 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:16:52,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-10-16 14:16:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 241. [2022-10-16 14:16:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 224 states have (on average 1.2410714285714286) internal successors, (278), 229 states have internal predecessors, (278), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 292 transitions. [2022-10-16 14:16:52,302 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 292 transitions. Word has length 63 [2022-10-16 14:16:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:52,303 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 292 transitions. [2022-10-16 14:16:52,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 292 transitions. [2022-10-16 14:16:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-16 14:16:52,304 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:52,304 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:52,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:52,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 14:16:52,518 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2040214576, now seen corresponding path program 2 times [2022-10-16 14:16:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:52,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889754726] [2022-10-16 14:16:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 14:16:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 14:16:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 14:16:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889754726] [2022-10-16 14:16:52,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889754726] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:52,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321106895] [2022-10-16 14:16:52,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:16:52,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:52,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:52,950 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:52,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 14:16:53,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:16:53,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:53,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 14:16:53,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 14:16:53,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 14:16:53,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321106895] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:53,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:53,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 24 [2022-10-16 14:16:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075373746] [2022-10-16 14:16:53,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:53,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 14:16:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 14:16:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-10-16 14:16:53,545 INFO L87 Difference]: Start difference. First operand 241 states and 292 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 23 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:53,861 INFO L93 Difference]: Finished difference Result 474 states and 571 transitions. [2022-10-16 14:16:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 14:16:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 23 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) Word has length 64 [2022-10-16 14:16:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:53,889 INFO L225 Difference]: With dead ends: 474 [2022-10-16 14:16:53,889 INFO L226 Difference]: Without dead ends: 268 [2022-10-16 14:16:53,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 14:16:53,891 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 127 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:53,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 802 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:53,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-10-16 14:16:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 251. [2022-10-16 14:16:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 234 states have (on average 1.2307692307692308) internal successors, (288), 239 states have internal predecessors, (288), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 302 transitions. [2022-10-16 14:16:53,919 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 302 transitions. Word has length 64 [2022-10-16 14:16:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:53,919 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 302 transitions. [2022-10-16 14:16:53,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 23 states have internal predecessors, (103), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 1 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-16 14:16:53,920 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 302 transitions. [2022-10-16 14:16:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-16 14:16:53,921 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:53,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:53,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:54,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 14:16:54,135 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1906834079, now seen corresponding path program 1 times [2022-10-16 14:16:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:54,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170334613] [2022-10-16 14:16:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 14:16:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:54,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170334613] [2022-10-16 14:16:54,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170334613] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:54,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698697621] [2022-10-16 14:16:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:54,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:54,316 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:54,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 14:16:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:54,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:16:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:54,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:54,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698697621] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:54,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 21 [2022-10-16 14:16:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917616502] [2022-10-16 14:16:54,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 14:16:54,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 14:16:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:16:54,720 INFO L87 Difference]: Start difference. First operand 251 states and 302 transitions. Second operand has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 20 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:55,127 INFO L93 Difference]: Finished difference Result 344 states and 417 transitions. [2022-10-16 14:16:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 14:16:55,128 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 20 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 64 [2022-10-16 14:16:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:55,129 INFO L225 Difference]: With dead ends: 344 [2022-10-16 14:16:55,129 INFO L226 Difference]: Without dead ends: 254 [2022-10-16 14:16:55,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 14:16:55,134 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 375 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:55,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 446 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:16:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-10-16 14:16:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2022-10-16 14:16:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 233 states have (on average 1.2188841201716738) internal successors, (284), 238 states have internal predecessors, (284), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 14:16:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2022-10-16 14:16:55,190 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 64 [2022-10-16 14:16:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:55,190 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2022-10-16 14:16:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 20 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:16:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2022-10-16 14:16:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-16 14:16:55,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:55,194 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 14:16:55,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:55,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:55,395 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2060844422, now seen corresponding path program 3 times [2022-10-16 14:16:55,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:55,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056755029] [2022-10-16 14:16:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:55,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 14:16:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 14:16:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-16 14:16:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:55,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056755029] [2022-10-16 14:16:55,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056755029] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:55,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132314658] [2022-10-16 14:16:55,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:16:55,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:55,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:55,623 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:55,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 14:16:55,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 14:16:55,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:16:55,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-16 14:16:55,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:55,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132314658] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:55,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:55,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-10-16 14:16:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262912613] [2022-10-16 14:16:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:16:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:16:55,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:16:55,920 INFO L87 Difference]: Start difference. First operand 250 states and 298 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:55,962 INFO L93 Difference]: Finished difference Result 250 states and 298 transitions. [2022-10-16 14:16:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:16:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2022-10-16 14:16:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:55,965 INFO L225 Difference]: With dead ends: 250 [2022-10-16 14:16:55,965 INFO L226 Difference]: Without dead ends: 249 [2022-10-16 14:16:55,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:16:55,966 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 147 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 [2022-10-16 14:16:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-16 14:16:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 228. [2022-10-16 14:16:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 215 states have (on average 1.1953488372093024) internal successors, (257), 219 states have internal predecessors, (257), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:16:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 265 transitions. [2022-10-16 14:16:55,995 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 265 transitions. Word has length 67 [2022-10-16 14:16:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:55,995 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 265 transitions. [2022-10-16 14:16:55,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 265 transitions. [2022-10-16 14:16:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 14:16:55,997 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:55,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:56,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:56,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:56,211 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:56,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 450007354, now seen corresponding path program 1 times [2022-10-16 14:16:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:56,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382550387] [2022-10-16 14:16:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-10-16 14:16:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382550387] [2022-10-16 14:16:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382550387] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382021708] [2022-10-16 14:16:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:56,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:56,403 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:56,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 14:16:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:56,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 14:16:56,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:56,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:56,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382021708] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:56,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:56,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 20 [2022-10-16 14:16:56,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027362145] [2022-10-16 14:16:56,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:56,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 14:16:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 14:16:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:16:56,811 INFO L87 Difference]: Start difference. First operand 228 states and 265 transitions. Second operand has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:58,504 INFO L93 Difference]: Finished difference Result 505 states and 592 transitions. [2022-10-16 14:16:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-10-16 14:16:58,504 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2022-10-16 14:16:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:58,507 INFO L225 Difference]: With dead ends: 505 [2022-10-16 14:16:58,507 INFO L226 Difference]: Without dead ends: 454 [2022-10-16 14:16:58,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3636 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1772, Invalid=8328, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 14:16:58,513 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 885 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 624 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:16:58,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-10-16 14:16:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 234. [2022-10-16 14:16:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 222 states have (on average 1.1891891891891893) internal successors, (264), 225 states have internal predecessors, (264), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:16:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 272 transitions. [2022-10-16 14:16:58,551 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 272 transitions. Word has length 70 [2022-10-16 14:16:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:58,551 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 272 transitions. [2022-10-16 14:16:58,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:16:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 272 transitions. [2022-10-16 14:16:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 14:16:58,552 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:58,552 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:58,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-10-16 14:16:58,767 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1062633173, now seen corresponding path program 1 times [2022-10-16 14:16:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942741720] [2022-10-16 14:16:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 14:16:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942741720] [2022-10-16 14:16:58,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942741720] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:58,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962937597] [2022-10-16 14:16:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:58,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:58,994 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:59,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 14:16:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:59,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:16:59,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 14:16:59,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:16:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962937597] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:16:59,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:16:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-10-16 14:16:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546849623] [2022-10-16 14:16:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:16:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:16:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:16:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:16:59,247 INFO L87 Difference]: Start difference. First operand 234 states and 272 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:59,338 INFO L93 Difference]: Finished difference Result 276 states and 325 transitions. [2022-10-16 14:16:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:16:59,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2022-10-16 14:16:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:59,340 INFO L225 Difference]: With dead ends: 276 [2022-10-16 14:16:59,340 INFO L226 Difference]: Without dead ends: 274 [2022-10-16 14:16:59,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:16:59,342 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 79 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 163 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:16:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-10-16 14:16:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2022-10-16 14:16:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 260 states have (on average 1.2115384615384615) internal successors, (315), 263 states have internal predecessors, (315), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:16:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 323 transitions. [2022-10-16 14:16:59,396 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 323 transitions. Word has length 71 [2022-10-16 14:16:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 323 transitions. [2022-10-16 14:16:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:16:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 323 transitions. [2022-10-16 14:16:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 14:16:59,399 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:59,399 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:16:59,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 14:16:59,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-10-16 14:16:59,613 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:16:59,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -704547047, now seen corresponding path program 4 times [2022-10-16 14:16:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:59,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433158581] [2022-10-16 14:16:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:59,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:16:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:16:59,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433158581] [2022-10-16 14:16:59,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433158581] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361529628] [2022-10-16 14:16:59,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 14:16:59,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:59,949 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:59,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 14:17:00,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 14:17:00,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:17:00,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 14:17:00,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:00,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:17:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:00,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361529628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:17:00,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:17:00,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-10-16 14:17:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763051719] [2022-10-16 14:17:00,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:17:00,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-16 14:17:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-16 14:17:00,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 14:17:00,685 INFO L87 Difference]: Start difference. First operand 272 states and 323 transitions. Second operand has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:01,144 INFO L93 Difference]: Finished difference Result 891 states and 1104 transitions. [2022-10-16 14:17:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 14:17:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2022-10-16 14:17:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:01,150 INFO L225 Difference]: With dead ends: 891 [2022-10-16 14:17:01,150 INFO L226 Difference]: Without dead ends: 890 [2022-10-16 14:17:01,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=604, Invalid=1558, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 14:17:01,152 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 656 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:01,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 806 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:17:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-10-16 14:17:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 344. [2022-10-16 14:17:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 332 states have (on average 1.2379518072289157) internal successors, (411), 335 states have internal predecessors, (411), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 419 transitions. [2022-10-16 14:17:01,210 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 419 transitions. Word has length 74 [2022-10-16 14:17:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:01,211 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 419 transitions. [2022-10-16 14:17:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 419 transitions. [2022-10-16 14:17:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 14:17:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:01,212 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:01,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:01,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:01,426 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash 449136636, now seen corresponding path program 1 times [2022-10-16 14:17:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142892890] [2022-10-16 14:17:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:01,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-16 14:17:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142892890] [2022-10-16 14:17:01,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142892890] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185322041] [2022-10-16 14:17:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:01,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:01,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:01,667 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:01,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 14:17:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:01,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:17:01,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-16 14:17:01,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:17:01,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185322041] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:17:01,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:17:01,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-10-16 14:17:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971670608] [2022-10-16 14:17:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:17:01,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:17:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:17:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:17:01,907 INFO L87 Difference]: Start difference. First operand 344 states and 419 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:01,995 INFO L93 Difference]: Finished difference Result 349 states and 424 transitions. [2022-10-16 14:17:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:17:01,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2022-10-16 14:17:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:01,998 INFO L225 Difference]: With dead ends: 349 [2022-10-16 14:17:01,998 INFO L226 Difference]: Without dead ends: 348 [2022-10-16 14:17:01,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:17:01,999 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 219 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:17:02,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-10-16 14:17:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 346. [2022-10-16 14:17:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 334 states have (on average 1.2365269461077844) internal successors, (413), 337 states have internal predecessors, (413), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 421 transitions. [2022-10-16 14:17:02,053 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 421 transitions. Word has length 78 [2022-10-16 14:17:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:02,053 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 421 transitions. [2022-10-16 14:17:02,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 421 transitions. [2022-10-16 14:17:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-16 14:17:02,055 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:02,055 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:02,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:02,269 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1038334040, now seen corresponding path program 1 times [2022-10-16 14:17:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:02,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510318088] [2022-10-16 14:17:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-16 14:17:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510318088] [2022-10-16 14:17:02,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510318088] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121072104] [2022-10-16 14:17:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:02,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:02,494 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:02,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 14:17:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:02,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:17:02,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-10-16 14:17:02,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:17:02,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121072104] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:17:02,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:17:02,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 8 [2022-10-16 14:17:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134928195] [2022-10-16 14:17:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:17:02,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:17:02,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:17:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:17:02,739 INFO L87 Difference]: Start difference. First operand 346 states and 421 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:02,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:02,823 INFO L93 Difference]: Finished difference Result 416 states and 510 transitions. [2022-10-16 14:17:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:17:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2022-10-16 14:17:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:02,825 INFO L225 Difference]: With dead ends: 416 [2022-10-16 14:17:02,825 INFO L226 Difference]: Without dead ends: 346 [2022-10-16 14:17:02,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:17:02,826 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:02,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 250 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:17:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-10-16 14:17:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2022-10-16 14:17:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 330 states have (on average 1.2272727272727273) internal successors, (405), 331 states have internal predecessors, (405), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 413 transitions. [2022-10-16 14:17:02,872 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 413 transitions. Word has length 79 [2022-10-16 14:17:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:02,872 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 413 transitions. [2022-10-16 14:17:02,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 413 transitions. [2022-10-16 14:17:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-16 14:17:02,873 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:02,874 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:02,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:03,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 14:17:03,090 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1835502355, now seen corresponding path program 1 times [2022-10-16 14:17:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:03,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557687569] [2022-10-16 14:17:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-10-16 14:17:03,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:03,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557687569] [2022-10-16 14:17:03,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557687569] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:17:03,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:17:03,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:17:03,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232447275] [2022-10-16 14:17:03,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:17:03,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:17:03,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:17:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:17:03,184 INFO L87 Difference]: Start difference. First operand 340 states and 413 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:03,270 INFO L93 Difference]: Finished difference Result 477 states and 589 transitions. [2022-10-16 14:17:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:17:03,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2022-10-16 14:17:03,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:03,273 INFO L225 Difference]: With dead ends: 477 [2022-10-16 14:17:03,273 INFO L226 Difference]: Without dead ends: 345 [2022-10-16 14:17:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:17:03,274 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:03,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 164 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:17:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-10-16 14:17:03,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2022-10-16 14:17:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 331 states have (on average 1.2235649546827794) internal successors, (405), 332 states have internal predecessors, (405), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 413 transitions. [2022-10-16 14:17:03,326 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 413 transitions. Word has length 81 [2022-10-16 14:17:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:03,326 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 413 transitions. [2022-10-16 14:17:03,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 413 transitions. [2022-10-16 14:17:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 14:17:03,328 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:03,328 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-10-16 14:17:03,328 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1031245663, now seen corresponding path program 1 times [2022-10-16 14:17:03,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:03,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71143292] [2022-10-16 14:17:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:03,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-10-16 14:17:03,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:03,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71143292] [2022-10-16 14:17:03,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71143292] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:17:03,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:17:03,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 14:17:03,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420979265] [2022-10-16 14:17:03,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:17:03,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 14:17:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 14:17:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:17:03,497 INFO L87 Difference]: Start difference. First operand 341 states and 413 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:03,751 INFO L93 Difference]: Finished difference Result 722 states and 909 transitions. [2022-10-16 14:17:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 14:17:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2022-10-16 14:17:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:03,755 INFO L225 Difference]: With dead ends: 722 [2022-10-16 14:17:03,755 INFO L226 Difference]: Without dead ends: 590 [2022-10-16 14:17:03,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:17:03,756 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 99 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:03,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 427 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:17:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-10-16 14:17:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 453. [2022-10-16 14:17:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 443 states have (on average 1.2483069977426637) internal successors, (553), 444 states have internal predecessors, (553), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 561 transitions. [2022-10-16 14:17:03,839 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 561 transitions. Word has length 87 [2022-10-16 14:17:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:03,839 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 561 transitions. [2022-10-16 14:17:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 561 transitions. [2022-10-16 14:17:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-16 14:17:03,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:03,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:03,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-10-16 14:17:03,841 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1590701429, now seen corresponding path program 1 times [2022-10-16 14:17:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:03,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929836880] [2022-10-16 14:17:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 14:17:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:04,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929836880] [2022-10-16 14:17:04,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929836880] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:04,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619370353] [2022-10-16 14:17:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:04,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:04,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:04,118 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:04,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 14:17:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:04,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:17:04,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:04,537 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-16 14:17:04,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:17:04,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619370353] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:17:04,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:17:04,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2022-10-16 14:17:04,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637113525] [2022-10-16 14:17:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:17:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 14:17:04,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 14:17:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:17:04,540 INFO L87 Difference]: Start difference. First operand 453 states and 561 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:04,789 INFO L93 Difference]: Finished difference Result 658 states and 820 transitions. [2022-10-16 14:17:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 14:17:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2022-10-16 14:17:04,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:04,792 INFO L225 Difference]: With dead ends: 658 [2022-10-16 14:17:04,793 INFO L226 Difference]: Without dead ends: 405 [2022-10-16 14:17:04,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:17:04,794 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:04,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 286 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:17:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-10-16 14:17:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 395. [2022-10-16 14:17:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 385 states have (on average 1.2311688311688311) internal successors, (474), 386 states have internal predecessors, (474), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 482 transitions. [2022-10-16 14:17:04,862 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 482 transitions. Word has length 90 [2022-10-16 14:17:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:04,862 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 482 transitions. [2022-10-16 14:17:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 482 transitions. [2022-10-16 14:17:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-16 14:17:04,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:04,864 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:04,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-16 14:17:05,065 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:05,066 INFO L85 PathProgramCache]: Analyzing trace with hash 23112957, now seen corresponding path program 2 times [2022-10-16 14:17:05,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:05,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991480694] [2022-10-16 14:17:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 14:17:05,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:05,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991480694] [2022-10-16 14:17:05,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991480694] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:05,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247393525] [2022-10-16 14:17:05,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:17:05,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:05,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:05,296 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:05,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 14:17:05,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 14:17:05,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:17:05,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:17:05,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-16 14:17:05,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:17:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-16 14:17:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247393525] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:17:05,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:17:05,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2022-10-16 14:17:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308372721] [2022-10-16 14:17:05,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:17:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 14:17:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 14:17:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:17:05,689 INFO L87 Difference]: Start difference. First operand 395 states and 482 transitions. Second operand has 15 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:17:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:05,934 INFO L93 Difference]: Finished difference Result 460 states and 562 transitions. [2022-10-16 14:17:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 14:17:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 90 [2022-10-16 14:17:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:05,936 INFO L225 Difference]: With dead ends: 460 [2022-10-16 14:17:05,936 INFO L226 Difference]: Without dead ends: 455 [2022-10-16 14:17:05,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-10-16 14:17:05,940 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 175 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:05,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 296 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:17:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-10-16 14:17:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 375. [2022-10-16 14:17:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 366 states have (on average 1.2295081967213115) internal successors, (450), 366 states have internal predecessors, (450), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 458 transitions. [2022-10-16 14:17:06,005 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 458 transitions. Word has length 90 [2022-10-16 14:17:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:06,005 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 458 transitions. [2022-10-16 14:17:06,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:17:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 458 transitions. [2022-10-16 14:17:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-16 14:17:06,007 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:06,007 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:06,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-10-16 14:17:06,223 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:06,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:06,224 INFO L85 PathProgramCache]: Analyzing trace with hash -990534631, now seen corresponding path program 5 times [2022-10-16 14:17:06,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:06,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037780278] [2022-10-16 14:17:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:06,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:06,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037780278] [2022-10-16 14:17:06,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037780278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:06,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792959011] [2022-10-16 14:17:06,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 14:17:06,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:06,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:06,973 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:06,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 14:17:07,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-10-16 14:17:07,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:17:07,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-16 14:17:07,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:07,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:17:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:08,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792959011] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:17:08,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:17:08,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 64 [2022-10-16 14:17:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810147196] [2022-10-16 14:17:08,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:17:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-16 14:17:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:17:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-16 14:17:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 14:17:08,320 INFO L87 Difference]: Start difference. First operand 375 states and 458 transitions. Second operand has 65 states, 64 states have (on average 1.90625) internal successors, (122), 64 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:09,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:17:09,798 INFO L93 Difference]: Finished difference Result 1633 states and 1981 transitions. [2022-10-16 14:17:09,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 14:17:09,799 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.90625) internal successors, (122), 64 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2022-10-16 14:17:09,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:17:09,807 INFO L225 Difference]: With dead ends: 1633 [2022-10-16 14:17:09,808 INFO L226 Difference]: Without dead ends: 1632 [2022-10-16 14:17:09,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2484, Invalid=6446, Unknown=0, NotChecked=0, Total=8930 [2022-10-16 14:17:09,812 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 1272 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:17:09,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1107 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:17:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-10-16 14:17:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 567. [2022-10-16 14:17:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 558 states have (on average 1.2652329749103943) internal successors, (706), 558 states have internal predecessors, (706), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:17:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 714 transitions. [2022-10-16 14:17:09,937 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 714 transitions. Word has length 98 [2022-10-16 14:17:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:17:09,937 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 714 transitions. [2022-10-16 14:17:09,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.90625) internal successors, (122), 64 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:17:09,938 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 714 transitions. [2022-10-16 14:17:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-10-16 14:17:09,940 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:17:09,940 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:17:09,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 14:17:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:10,156 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [sll_appendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sll_appendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:17:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:17:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2088304153, now seen corresponding path program 6 times [2022-10-16 14:17:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:17:10,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392762908] [2022-10-16 14:17:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:17:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:17:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:17:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:17:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-16 14:17:12,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:17:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392762908] [2022-10-16 14:17:12,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392762908] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:17:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212460016] [2022-10-16 14:17:12,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 14:17:12,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:17:12,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:17:12,695 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:17:12,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 14:17:13,677 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-10-16 14:17:13,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:17:13,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 160 conjunts are in the unsatisfiable core [2022-10-16 14:17:13,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:17:13,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 14:17:13,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-10-16 14:17:14,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 14:17:14,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 14:17:14,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:14,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 14:17:14,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:14,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-16 14:17:15,382 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-10-16 14:17:15,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 75 [2022-10-16 14:17:15,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:15,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:15,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:15,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-10-16 14:17:16,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,080 INFO L356 Elim1Store]: treesize reduction 72, result has 23.4 percent of original size [2022-10-16 14:17:16,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 105 [2022-10-16 14:17:16,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 77 [2022-10-16 14:17:16,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 75 [2022-10-16 14:17:16,464 INFO L356 Elim1Store]: treesize reduction 96, result has 18.6 percent of original size [2022-10-16 14:17:16,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 215 treesize of output 116 [2022-10-16 14:17:16,895 INFO L356 Elim1Store]: treesize reduction 192, result has 27.3 percent of original size [2022-10-16 14:17:16,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 19 case distinctions, treesize of input 222 treesize of output 162 [2022-10-16 14:17:16,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:16,973 INFO L356 Elim1Store]: treesize reduction 180, result has 23.7 percent of original size [2022-10-16 14:17:16,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 78 [2022-10-16 14:17:17,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:17,697 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-10-16 14:17:17,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 40 [2022-10-16 14:17:19,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:20,004 INFO L356 Elim1Store]: treesize reduction 349, result has 10.5 percent of original size [2022-10-16 14:17:20,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 20 new quantified variables, introduced 45 case distinctions, treesize of input 490 treesize of output 204 [2022-10-16 14:17:20,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:20,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:17:20,060 INFO L356 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-10-16 14:17:20,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 48 [2022-10-16 14:17:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 273 proven. 30 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-10-16 14:17:20,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:17:23,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,854 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:24,153 INFO L356 Elim1Store]: treesize reduction 2893, result has 50.1 percent of original size [2022-10-16 14:17:24,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 13 case distinctions, treesize of input 687190 treesize of output 561498 [2022-10-16 14:17:25,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:25,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:25,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:26,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:26,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:26,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:26,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:26,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:17:38,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 14:19:55,870 WARN L233 SmtUtils]: Spent 2.27m on a formula simplification. DAG size of input: 2191 DAG size of output: 978 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-10-16 14:19:55,876 INFO L356 Elim1Store]: treesize reduction 4452, result has 33.8 percent of original size [2022-10-16 14:19:55,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 39 select indices, 39 select index equivalence classes, 8 disjoint index pairs (out of 741 index pairs), introduced 50 new quantified variables, introduced 664 case distinctions, treesize of input 82577654354324 treesize of output 57991867636353