/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-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:20:15,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:20:15,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:20:15,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:20:15,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:20:15,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:20:15,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:20:15,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:20:15,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:20:15,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:20:15,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:20:15,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:20:15,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:20:15,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:20:15,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:20:15,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:20:15,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:20:15,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:20:15,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:20:15,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:20:15,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:20:15,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:20:15,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:20:15,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:20:15,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:20:15,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:20:15,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:20:15,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:20:15,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:20:15,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:20:15,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:20:15,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:20:15,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:20:15,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:20:15,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:20:15,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:20:15,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:20:15,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:20:15,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:20:15,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:20:15,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:20:15,831 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 14:20:15,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:20:15,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:20:15,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:20:15,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:20:15,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:20:15,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:20:15,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:20:15,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:20:15,893 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:20:15,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:20:15,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:20:15,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:20:15,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:20:15,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:20:15,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:20:15,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:20:15,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:20:15,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:20:15,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:20:15,896 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:20:15,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:20:15,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:20:15,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:20:15,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:20:15,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:20:15,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:20:15,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:15,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:20:15,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:20:15,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:20:15,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:20:15,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:20:15,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:20:15,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:20:16,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:20:16,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:20:16,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:20:16,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:20:16,377 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:20:16,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2022-10-16 14:20:16,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb52b03da/63d5f0409a084d249cf8ed5cedf85339/FLAG642fd7e8e [2022-10-16 14:20:17,078 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:20:17,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_append_unequal.i [2022-10-16 14:20:17,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb52b03da/63d5f0409a084d249cf8ed5cedf85339/FLAG642fd7e8e [2022-10-16 14:20:17,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb52b03da/63d5f0409a084d249cf8ed5cedf85339 [2022-10-16 14:20:17,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:20:17,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:20:17,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:17,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:20:17,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:20:17,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:17" (1/1) ... [2022-10-16 14:20:17,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b531b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:17, skipping insertion in model container [2022-10-16 14:20:17,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:17" (1/1) ... [2022-10-16 14:20:17,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:20:17,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:20:17,882 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-simple/sll2c_append_unequal.i[24587,24600] [2022-10-16 14:20:17,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:17,906 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:20:18,015 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-simple/sll2c_append_unequal.i[24587,24600] [2022-10-16 14:20:18,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:18,074 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:20:18,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18 WrapperNode [2022-10-16 14:20:18,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:18,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:18,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:20:18,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:20:18,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,144 INFO L138 Inliner]: procedures = 127, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2022-10-16 14:20:18,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:18,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:20:18,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:20:18,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:20:18,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:20:18,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:20:18,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:20:18,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:20:18,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (1/1) ... [2022-10-16 14:20:18,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:18,245 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 14:20:18,268 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 14:20:18,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:20:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:20:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-10-16 14:20:18,336 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-10-16 14:20:18,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:20:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:20:18,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:20:18,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:20:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:20:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:20:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 14:20:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:20:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:20:18,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:20:18,653 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:20:18,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:20:19,100 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:20:19,114 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:20:19,114 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-16 14:20:19,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:19 BoogieIcfgContainer [2022-10-16 14:20:19,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:20:19,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:20:19,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:20:19,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:20:19,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:17" (1/3) ... [2022-10-16 14:20:19,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc6d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:19, skipping insertion in model container [2022-10-16 14:20:19,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:18" (2/3) ... [2022-10-16 14:20:19,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc6d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:19, skipping insertion in model container [2022-10-16 14:20:19,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:19" (3/3) ... [2022-10-16 14:20:19,135 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2022-10-16 14:20:19,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:20:19,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-16 14:20:19,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:20:19,271 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;@69a216b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:20:19,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-16 14:20:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 49 states have internal predecessors, (65), 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 14:20:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:20:19,288 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:19,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:19,289 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -101273311, now seen corresponding path program 1 times [2022-10-16 14:20:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741365861] [2022-10-16 14:20:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:19,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741365861] [2022-10-16 14:20:19,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741365861] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:19,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:19,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312702212] [2022-10-16 14:20:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:19,993 INFO L87 Difference]: Start difference. First operand has 54 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 49 states have internal predecessors, (65), 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) Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:20,126 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2022-10-16 14:20:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:20,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-10-16 14:20:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:20,138 INFO L225 Difference]: With dead ends: 104 [2022-10-16 14:20:20,138 INFO L226 Difference]: Without dead ends: 50 [2022-10-16 14:20:20,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 14:20:20,147 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:20,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 210 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-16 14:20:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-10-16 14:20:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 42 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-10-16 14:20:20,200 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 18 [2022-10-16 14:20:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:20,202 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-10-16 14:20:20,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-10-16 14:20:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 14:20:20,204 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:20,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:20:20,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1155494704, now seen corresponding path program 1 times [2022-10-16 14:20:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473911672] [2022-10-16 14:20:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:20,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:20,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:20,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473911672] [2022-10-16 14:20:20,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473911672] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:20,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:20,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926070643] [2022-10-16 14:20:20,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:20,448 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:20,583 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-10-16 14:20:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-10-16 14:20:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:20,587 INFO L225 Difference]: With dead ends: 50 [2022-10-16 14:20:20,587 INFO L226 Difference]: Without dead ends: 49 [2022-10-16 14:20:20,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 14:20:20,597 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:20,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-16 14:20:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-16 14:20:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 43 states have internal predecessors, (48), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-10-16 14:20:20,641 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 19 [2022-10-16 14:20:20,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:20,642 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-10-16 14:20:20,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-10-16 14:20:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:20:20,644 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:20,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:20,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:20:20,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash 89717623, now seen corresponding path program 1 times [2022-10-16 14:20:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:20,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144151180] [2022-10-16 14:20:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 14:20:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:20,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144151180] [2022-10-16 14:20:20,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144151180] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384108665] [2022-10-16 14:20:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:20,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:20,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:20,955 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 14:20:20,979 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 14:20:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:21,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:20:21,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:21,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:21,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384108665] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:21,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:21,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-10-16 14:20:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078652574] [2022-10-16 14:20:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:21,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:21,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:21,182 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:21,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:21,227 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2022-10-16 14:20:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:21,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-10-16 14:20:21,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:21,229 INFO L225 Difference]: With dead ends: 83 [2022-10-16 14:20:21,229 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 14:20:21,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:20:21,232 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 64 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:21,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 94 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 14:20:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-10-16 14:20:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 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 14:20:21,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-10-16 14:20:21,244 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2022-10-16 14:20:21,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:21,245 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-10-16 14:20:21,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-10-16 14:20:21,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 14:20:21,247 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:21,247 INFO L195 NwaCegarLoop]: trace histogram [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 14:20:21,286 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 14:20:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:21,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 354942215, now seen corresponding path program 1 times [2022-10-16 14:20:21,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637762467] [2022-10-16 14:20:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637762467] [2022-10-16 14:20:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637762467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:21,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:21,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859186800] [2022-10-16 14:20:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:21,709 INFO L87 Difference]: Start difference. First operand 43 states and 48 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:21,795 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-10-16 14:20:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:21,795 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-10-16 14:20:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:21,799 INFO L225 Difference]: With dead ends: 49 [2022-10-16 14:20:21,799 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 14:20:21,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 14:20:21,809 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:21,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 147 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 14:20:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-10-16 14:20:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 42 states have internal predecessors, (46), 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 14:20:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-10-16 14:20:21,853 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 36 [2022-10-16 14:20:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:21,854 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-10-16 14:20:21,857 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-10-16 14:20:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:20:21,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:21,862 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-10-16 14:20:21,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:20:21,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:21,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:21,864 INFO L85 PathProgramCache]: Analyzing trace with hash -685908248, now seen corresponding path program 1 times [2022-10-16 14:20:21,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:21,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775632656] [2022-10-16 14:20:21,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775632656] [2022-10-16 14:20:22,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775632656] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:22,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:22,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:20:22,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378852689] [2022-10-16 14:20:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:22,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:20:22,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:20:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:22,086 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:22,187 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-10-16 14:20:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:20:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-10-16 14:20:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:22,189 INFO L225 Difference]: With dead ends: 60 [2022-10-16 14:20:22,189 INFO L226 Difference]: Without dead ends: 59 [2022-10-16 14:20:22,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:20:22,191 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:22,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 180 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-16 14:20:22,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-10-16 14:20:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 46 states have internal predecessors, (51), 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 14:20:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-10-16 14:20:22,199 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2022-10-16 14:20:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:22,200 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-10-16 14:20:22,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-10-16 14:20:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:20:22,202 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:22,202 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-10-16 14:20:22,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 14:20:22,202 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash -685867533, now seen corresponding path program 1 times [2022-10-16 14:20:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:22,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997512839] [2022-10-16 14:20:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:22,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:22,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:22,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997512839] [2022-10-16 14:20:22,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997512839] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:22,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956975301] [2022-10-16 14:20:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:22,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:22,426 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 14:20:22,437 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 14:20:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:22,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:22,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:22,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956975301] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:22,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:22,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 14:20:22,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247573610] [2022-10-16 14:20:22,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 14:20:22,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 14:20:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:20:22,799 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:23,027 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2022-10-16 14:20:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:20:23,028 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-10-16 14:20:23,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:23,030 INFO L225 Difference]: With dead ends: 83 [2022-10-16 14:20:23,030 INFO L226 Difference]: Without dead ends: 82 [2022-10-16 14:20:23,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:20:23,032 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:23,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 260 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-16 14:20:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2022-10-16 14:20:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 59 states have internal predecessors, (68), 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 14:20:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2022-10-16 14:20:23,045 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 41 [2022-10-16 14:20:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:23,046 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2022-10-16 14:20:23,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2022-10-16 14:20:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 14:20:23,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:23,047 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-10-16 14:20:23,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 14:20:23,262 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,SelfDestructingSolverStorable5 [2022-10-16 14:20:23,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash 211680914, now seen corresponding path program 1 times [2022-10-16 14:20:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:23,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778954780] [2022-10-16 14:20:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:23,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778954780] [2022-10-16 14:20:23,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778954780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:23,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:23,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:20:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442247660] [2022-10-16 14:20:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:20:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:20:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:23,515 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:23,610 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-10-16 14:20:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:20:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-10-16 14:20:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:23,615 INFO L225 Difference]: With dead ends: 71 [2022-10-16 14:20:23,616 INFO L226 Difference]: Without dead ends: 70 [2022-10-16 14:20:23,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:20:23,618 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:23,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 224 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-16 14:20:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-10-16 14:20:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 60 states have internal predecessors, (69), 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 14:20:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-10-16 14:20:23,641 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 42 [2022-10-16 14:20:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:23,641 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-10-16 14:20:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-10-16 14:20:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 14:20:23,644 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:23,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-10-16 14:20:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 14:20:23,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 212943060, now seen corresponding path program 1 times [2022-10-16 14:20:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:23,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915214919] [2022-10-16 14:20:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:23,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915214919] [2022-10-16 14:20:23,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915214919] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:23,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56970768] [2022-10-16 14:20:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:23,883 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 14:20:23,904 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 14:20:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:24,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56970768] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:24,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:24,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-10-16 14:20:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850629032] [2022-10-16 14:20:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:20:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:20:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:20:24,140 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:24,203 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-10-16 14:20:24,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-10-16 14:20:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:24,205 INFO L225 Difference]: With dead ends: 65 [2022-10-16 14:20:24,205 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 14:20:24,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:20:24,206 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:24,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 160 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 14:20:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-10-16 14:20:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2) internal successors, (66), 59 states have internal predecessors, (66), 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 14:20:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2022-10-16 14:20:24,214 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 42 [2022-10-16 14:20:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:24,215 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2022-10-16 14:20:24,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2022-10-16 14:20:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 14:20:24,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:24,216 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-10-16 14:20:24,256 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 14:20:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:24,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2027826134, now seen corresponding path program 1 times [2022-10-16 14:20:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:24,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431393191] [2022-10-16 14:20:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:24,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431393191] [2022-10-16 14:20:24,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431393191] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274384009] [2022-10-16 14:20:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:24,625 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 14:20:24,646 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 14:20:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 14:20:24,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:24,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:24,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274384009] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:24,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:24,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-10-16 14:20:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269189878] [2022-10-16 14:20:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:24,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:24,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:24,846 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:24,853 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-10-16 14:20:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:24,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-10-16 14:20:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:24,855 INFO L225 Difference]: With dead ends: 64 [2022-10-16 14:20:24,855 INFO L226 Difference]: Without dead ends: 63 [2022-10-16 14:20:24,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:24,856 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 12 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:24,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:24,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-16 14:20:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-10-16 14:20:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 58 states have internal predecessors, (65), 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 14:20:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2022-10-16 14:20:24,866 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 43 [2022-10-16 14:20:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:24,866 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2022-10-16 14:20:24,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2022-10-16 14:20:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 14:20:24,868 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:24,868 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-10-16 14:20:24,903 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 14:20:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:25,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1561899412, now seen corresponding path program 1 times [2022-10-16 14:20:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:25,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836027298] [2022-10-16 14:20:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:25,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:25,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836027298] [2022-10-16 14:20:25,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836027298] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:25,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156418063] [2022-10-16 14:20:25,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:25,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:25,304 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 14:20:25,328 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 14:20:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 14:20:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:25,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:25,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156418063] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:25,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:25,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2022-10-16 14:20:25,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388138948] [2022-10-16 14:20:25,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:25,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:25,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:25,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:25,531 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:25,536 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2022-10-16 14:20:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-10-16 14:20:25,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:25,538 INFO L225 Difference]: With dead ends: 63 [2022-10-16 14:20:25,538 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 14:20:25,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:25,540 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:25,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:25,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 14:20:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 14:20:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.163265306122449) internal successors, (57), 51 states have internal predecessors, (57), 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 14:20:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-10-16 14:20:25,555 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 44 [2022-10-16 14:20:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:25,560 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-10-16 14:20:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-10-16 14:20:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 14:20:25,561 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:25,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2022-10-16 14:20:25,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:25,762 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,SelfDestructingSolverStorable9 [2022-10-16 14:20:25,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash -571534980, now seen corresponding path program 1 times [2022-10-16 14:20:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:25,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580900421] [2022-10-16 14:20:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:26,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:26,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580900421] [2022-10-16 14:20:26,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580900421] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50403575] [2022-10-16 14:20:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:26,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:26,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:26,018 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 14:20:26,045 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 14:20:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 14:20:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:26,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:26,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50403575] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:26,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:26,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2022-10-16 14:20:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640535367] [2022-10-16 14:20:26,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:26,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 14:20:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 14:20:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-10-16 14:20:26,365 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 17 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:26,595 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-10-16 14:20:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 14:20:26,596 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-10-16 14:20:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:26,599 INFO L225 Difference]: With dead ends: 79 [2022-10-16 14:20:26,599 INFO L226 Difference]: Without dead ends: 78 [2022-10-16 14:20:26,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2022-10-16 14:20:26,602 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 63 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:26,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 227 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-16 14:20:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-10-16 14:20:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 56 states have internal predecessors, (63), 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 14:20:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2022-10-16 14:20:26,622 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 46 [2022-10-16 14:20:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:26,623 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2022-10-16 14:20:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2022-10-16 14:20:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 14:20:26,630 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:26,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2022-10-16 14:20:26,672 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 14:20:26,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:26,831 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash -537715074, now seen corresponding path program 1 times [2022-10-16 14:20:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:26,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899983211] [2022-10-16 14:20:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899983211] [2022-10-16 14:20:27,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899983211] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:27,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079238003] [2022-10-16 14:20:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:27,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:27,092 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 14:20:27,109 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 14:20:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 14:20:27,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:27,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079238003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:27,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:27,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2022-10-16 14:20:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789798988] [2022-10-16 14:20:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 14:20:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 14:20:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:20:27,363 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:27,429 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-10-16 14:20:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:20:27,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-10-16 14:20:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:27,431 INFO L225 Difference]: With dead ends: 61 [2022-10-16 14:20:27,431 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 14:20:27,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:20:27,432 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:27,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 185 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:27,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 14:20:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 14:20:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 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 14:20:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-10-16 14:20:27,439 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 47 [2022-10-16 14:20:27,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:27,440 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-10-16 14:20:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-10-16 14:20:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-16 14:20:27,441 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:27,441 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-10-16 14:20:27,482 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 14:20:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:27,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash -179502073, now seen corresponding path program 2 times [2022-10-16 14:20:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:27,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885549570] [2022-10-16 14:20:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 14:20:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:28,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885549570] [2022-10-16 14:20:28,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885549570] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:28,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:28,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 14:20:28,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205965110] [2022-10-16 14:20:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:28,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:20:28,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:28,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:20:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:28,114 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:28,273 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2022-10-16 14:20:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 14:20:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-10-16 14:20:28,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:28,275 INFO L225 Difference]: With dead ends: 88 [2022-10-16 14:20:28,275 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 14:20:28,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:20:28,276 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:28,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 14:20:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-10-16 14:20:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 53 states have internal predecessors, (57), 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 14:20:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2022-10-16 14:20:28,284 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 56 [2022-10-16 14:20:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:28,284 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2022-10-16 14:20:28,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2022-10-16 14:20:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 14:20:28,287 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:28,288 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-10-16 14:20:28,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 14:20:28,288 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:28,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1328665918, now seen corresponding path program 1 times [2022-10-16 14:20:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:28,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391698322] [2022-10-16 14:20:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:28,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-16 14:20:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391698322] [2022-10-16 14:20:28,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391698322] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836905075] [2022-10-16 14:20:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:28,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:28,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:28,701 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 14:20:28,723 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 14:20:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:20:28,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:20:29,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 14:20:29,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836905075] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:29,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:29,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 25 [2022-10-16 14:20:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646808448] [2022-10-16 14:20:29,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 14:20:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:29,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 14:20:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2022-10-16 14:20:29,235 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:29,635 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2022-10-16 14:20:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 14:20:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2022-10-16 14:20:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:29,637 INFO L225 Difference]: With dead ends: 139 [2022-10-16 14:20:29,637 INFO L226 Difference]: Without dead ends: 109 [2022-10-16 14:20:29,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=441, Invalid=1451, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 14:20:29,640 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 131 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:29,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 354 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-10-16 14:20:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 88. [2022-10-16 14:20:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 83 states have internal predecessors, (92), 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 14:20:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2022-10-16 14:20:29,649 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 58 [2022-10-16 14:20:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:29,649 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2022-10-16 14:20:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 24 states have internal predecessors, (87), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2022-10-16 14:20:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 14:20:29,650 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:29,651 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 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] [2022-10-16 14:20:29,690 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 14:20:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 14:20:29,866 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1810493170, now seen corresponding path program 1 times [2022-10-16 14:20:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:29,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917350268] [2022-10-16 14:20:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 14:20:30,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:30,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917350268] [2022-10-16 14:20:30,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917350268] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:30,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126371796] [2022-10-16 14:20:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:30,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:30,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:30,412 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 14:20:30,436 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 14:20:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:30,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 14:20:30,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 14:20:30,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 14:20:31,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126371796] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:31,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:31,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 30 [2022-10-16 14:20:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605686426] [2022-10-16 14:20:31,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:31,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 14:20:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 14:20:31,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-10-16 14:20:31,036 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 30 states, 30 states have (on average 3.566666666666667) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:31,731 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2022-10-16 14:20:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 14:20:31,732 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.566666666666667) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2022-10-16 14:20:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:31,733 INFO L225 Difference]: With dead ends: 173 [2022-10-16 14:20:31,733 INFO L226 Difference]: Without dead ends: 97 [2022-10-16 14:20:31,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2022-10-16 14:20:31,737 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 170 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:31,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 285 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:20:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-10-16 14:20:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2022-10-16 14:20:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.058139534883721) internal successors, (91), 87 states have internal predecessors, (91), 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 14:20:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2022-10-16 14:20:31,746 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 65 [2022-10-16 14:20:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:31,747 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2022-10-16 14:20:31,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.566666666666667) internal successors, (107), 29 states have internal predecessors, (107), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2022-10-16 14:20:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-16 14:20:31,748 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:31,748 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 4, 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] [2022-10-16 14:20:31,789 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 14:20:31,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 14:20:31,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:31,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1926832456, now seen corresponding path program 2 times [2022-10-16 14:20:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:31,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52978278] [2022-10-16 14:20:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 114 proven. 27 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-16 14:20:32,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:32,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52978278] [2022-10-16 14:20:32,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52978278] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:32,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571580106] [2022-10-16 14:20:32,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:32,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:33,000 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 14:20:33,021 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 14:20:33,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:33,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 14:20:33,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 14:20:33,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 14:20:34,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571580106] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:34,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:34,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 23, 23] total 51 [2022-10-16 14:20:34,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192577492] [2022-10-16 14:20:34,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:34,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-16 14:20:34,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-16 14:20:34,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 14:20:34,411 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 51 states, 51 states have (on average 3.156862745098039) internal successors, (161), 50 states have internal predecessors, (161), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:35,708 INFO L93 Difference]: Finished difference Result 257 states and 275 transitions. [2022-10-16 14:20:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-10-16 14:20:35,708 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.156862745098039) internal successors, (161), 50 states have internal predecessors, (161), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 92 [2022-10-16 14:20:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:35,710 INFO L225 Difference]: With dead ends: 257 [2022-10-16 14:20:35,710 INFO L226 Difference]: Without dead ends: 197 [2022-10-16 14:20:35,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1903, Invalid=6839, Unknown=0, NotChecked=0, Total=8742 [2022-10-16 14:20:35,715 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 436 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:35,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 336 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:20:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-10-16 14:20:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 152. [2022-10-16 14:20:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.1095890410958904) internal successors, (162), 147 states have internal predecessors, (162), 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 14:20:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2022-10-16 14:20:35,728 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 92 [2022-10-16 14:20:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:35,728 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2022-10-16 14:20:35,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.156862745098039) internal successors, (161), 50 states have internal predecessors, (161), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2022-10-16 14:20:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-16 14:20:35,730 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:35,730 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 5, 4, 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 14:20:35,759 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 14:20:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 14:20:35,945 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1531131012, now seen corresponding path program 2 times [2022-10-16 14:20:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:35,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528328589] [2022-10-16 14:20:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 14:20:36,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:36,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528328589] [2022-10-16 14:20:36,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528328589] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:36,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924029063] [2022-10-16 14:20:36,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:36,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:36,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:36,713 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 14:20:36,736 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 14:20:37,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:37,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:37,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 14:20:37,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 14:20:37,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-10-16 14:20:37,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924029063] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:37,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:37,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 52 [2022-10-16 14:20:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573684596] [2022-10-16 14:20:37,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:37,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-10-16 14:20:37,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-10-16 14:20:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=657, Invalid=2099, Unknown=0, NotChecked=0, Total=2756 [2022-10-16 14:20:37,773 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 53 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 52 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:38,657 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2022-10-16 14:20:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-10-16 14:20:38,658 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 52 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 99 [2022-10-16 14:20:38,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:38,660 INFO L225 Difference]: With dead ends: 196 [2022-10-16 14:20:38,660 INFO L226 Difference]: Without dead ends: 159 [2022-10-16 14:20:38,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1726 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1656, Invalid=5826, Unknown=0, NotChecked=0, Total=7482 [2022-10-16 14:20:38,664 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 232 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:38,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 522 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:20:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-16 14:20:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2022-10-16 14:20:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0337837837837838) internal successors, (153), 149 states have internal predecessors, (153), 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 14:20:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2022-10-16 14:20:38,680 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 99 [2022-10-16 14:20:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2022-10-16 14:20:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 52 states have internal predecessors, (149), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2022-10-16 14:20:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-16 14:20:38,683 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:38,683 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 5, 4, 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] [2022-10-16 14:20:38,728 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 14:20:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 14:20:38,902 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2020216563, now seen corresponding path program 3 times [2022-10-16 14:20:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:38,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106012232] [2022-10-16 14:20:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:38,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 372 proven. 50 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2022-10-16 14:20:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106012232] [2022-10-16 14:20:40,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106012232] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953379129] [2022-10-16 14:20:40,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:20:40,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:40,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:40,635 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 14:20:40,659 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 14:20:40,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 14:20:40,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:40,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 14:20:40,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:41,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 13 [2022-10-16 14:20:41,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-10-16 14:20:41,240 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2506 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_node_create_#res#1.base| v_ArrVal_2506))) (< |c_node_create_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_2505 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_node_create_#res#1.base| v_ArrVal_2505)))) is different from true [2022-10-16 14:20:41,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:41,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-16 14:20:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:41,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-10-16 14:20:41,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 17 [2022-10-16 14:20:41,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 13 [2022-10-16 14:20:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1243 trivial. 2 not checked. [2022-10-16 14:20:41,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:41,557 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_14| Int) (v_ArrVal_2512 (Array Int Int)) (v_ArrVal_2511 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_14| v_ArrVal_2512) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_14| v_ArrVal_2511) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|) 0)) (not (< |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_14| |c_#StackHeapBarrier|)))) is different from false [2022-10-16 14:20:41,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953379129] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:41,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 14:20:41,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2022-10-16 14:20:41,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402169322] [2022-10-16 14:20:41,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 14:20:41,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:41,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 14:20:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=338, Unknown=2, NotChecked=74, Total=462 [2022-10-16 14:20:41,564 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand has 20 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:42,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:42,075 INFO L93 Difference]: Finished difference Result 307 states and 314 transitions. [2022-10-16 14:20:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 14:20:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 154 [2022-10-16 14:20:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:42,076 INFO L225 Difference]: With dead ends: 307 [2022-10-16 14:20:42,077 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 14:20:42,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=488, Unknown=2, NotChecked=90, Total=650 [2022-10-16 14:20:42,078 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:42,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 369 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 60 Unchecked, 0.4s Time] [2022-10-16 14:20:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 14:20:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-10-16 14:20:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 151 states have internal predecessors, (154), 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 14:20:42,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 160 transitions. [2022-10-16 14:20:42,091 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 160 transitions. Word has length 154 [2022-10-16 14:20:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:42,092 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 160 transitions. [2022-10-16 14:20:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 160 transitions. [2022-10-16 14:20:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-10-16 14:20:42,094 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:42,094 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 6, 5, 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 14:20:42,127 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 14:20:42,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 14:20:42,309 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -800409211, now seen corresponding path program 1 times [2022-10-16 14:20:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:42,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079464020] [2022-10-16 14:20:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 440 proven. 80 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2022-10-16 14:20:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079464020] [2022-10-16 14:20:44,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079464020] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:44,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527569945] [2022-10-16 14:20:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:44,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:44,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:44,399 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 14:20:44,424 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 14:20:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:44,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 14:20:44,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 14:20:46,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 14:20:48,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527569945] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:48,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:48,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 47, 47] total 101 [2022-10-16 14:20:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094022829] [2022-10-16 14:20:48,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:48,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-10-16 14:20:48,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:48,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-10-16 14:20:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2269, Invalid=7831, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 14:20:48,586 INFO L87 Difference]: Start difference. First operand 156 states and 160 transitions. Second operand has 101 states, 101 states have (on average 2.9504950495049505) internal successors, (298), 100 states have internal predecessors, (298), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:52,531 INFO L93 Difference]: Finished difference Result 489 states and 518 transitions. [2022-10-16 14:20:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-10-16 14:20:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.9504950495049505) internal successors, (298), 100 states have internal predecessors, (298), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 159 [2022-10-16 14:20:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:52,535 INFO L225 Difference]: With dead ends: 489 [2022-10-16 14:20:52,535 INFO L226 Difference]: Without dead ends: 369 [2022-10-16 14:20:52,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7520 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=7435, Invalid=26975, Unknown=0, NotChecked=0, Total=34410 [2022-10-16 14:20:52,546 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 811 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:52,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 452 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 14:20:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-10-16 14:20:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 276. [2022-10-16 14:20:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 270 states have (on average 1.1) internal successors, (297), 271 states have internal predecessors, (297), 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 14:20:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 303 transitions. [2022-10-16 14:20:52,567 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 303 transitions. Word has length 159 [2022-10-16 14:20:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:52,567 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 303 transitions. [2022-10-16 14:20:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.9504950495049505) internal successors, (298), 100 states have internal predecessors, (298), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 303 transitions. [2022-10-16 14:20:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-10-16 14:20:52,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:52,570 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 7, 6, 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 14:20:52,610 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 14:20:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:52,786 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:20:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash -59559281, now seen corresponding path program 1 times [2022-10-16 14:20:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:52,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143178569] [2022-10-16 14:20:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:52,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:55,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:20:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 510 proven. 117 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2022-10-16 14:20:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143178569] [2022-10-16 14:20:55,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143178569] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858230189] [2022-10-16 14:20:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:55,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:55,291 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 14:20:55,298 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 14:20:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:55,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 14:20:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-16 14:20:57,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1265 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-16 14:21:00,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858230189] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:21:00,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:21:00,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 49, 49] total 106 [2022-10-16 14:21:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849091815] [2022-10-16 14:21:00,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:21:00,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-10-16 14:21:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:21:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-10-16 14:21:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2373, Invalid=8757, Unknown=0, NotChecked=0, Total=11130 [2022-10-16 14:21:00,005 INFO L87 Difference]: Start difference. First operand 276 states and 303 transitions. Second operand has 106 states, 106 states have (on average 3.0) internal successors, (318), 105 states have internal predecessors, (318), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:05,838 INFO L93 Difference]: Finished difference Result 595 states and 647 transitions. [2022-10-16 14:21:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-10-16 14:21:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.0) internal successors, (318), 105 states have internal predecessors, (318), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 166 [2022-10-16 14:21:05,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:05,844 INFO L225 Difference]: With dead ends: 595 [2022-10-16 14:21:05,844 INFO L226 Difference]: Without dead ends: 285 [2022-10-16 14:21:05,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11648 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=8895, Invalid=38847, Unknown=0, NotChecked=0, Total=47742 [2022-10-16 14:21:05,851 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1051 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:05,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 570 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 14:21:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-10-16 14:21:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 280. [2022-10-16 14:21:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 275 states have internal predecessors, (278), 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 14:21:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 284 transitions. [2022-10-16 14:21:05,869 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 284 transitions. Word has length 166 [2022-10-16 14:21:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:05,870 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 284 transitions. [2022-10-16 14:21:05,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.0) internal successors, (318), 105 states have internal predecessors, (318), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 284 transitions. [2022-10-16 14:21:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-10-16 14:21:05,874 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:05,875 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 8, 7, 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 14:21:05,909 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 14:21:06,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:06,089 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:21:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash 803875771, now seen corresponding path program 2 times [2022-10-16 14:21:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:06,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886954097] [2022-10-16 14:21:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:21:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:21:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:21:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 1386 proven. 161 refuted. 0 times theorem prover too weak. 3838 trivial. 0 not checked. [2022-10-16 14:21:09,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:21:09,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886954097] [2022-10-16 14:21:09,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886954097] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:21:09,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585318775] [2022-10-16 14:21:09,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:21:09,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:09,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:21:09,712 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 14:21:09,734 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 14:21:10,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:21:10,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:21:10,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-16 14:21:10,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:21:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 14:21:14,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:21:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5385 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-16 14:21:24,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585318775] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:21:24,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:21:24,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 95, 95] total 199 [2022-10-16 14:21:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142484158] [2022-10-16 14:21:24,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:21:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 199 states [2022-10-16 14:21:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:21:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2022-10-16 14:21:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9137, Invalid=30265, Unknown=0, NotChecked=0, Total=39402 [2022-10-16 14:21:24,053 INFO L87 Difference]: Start difference. First operand 280 states and 284 transitions. Second operand has 199 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 198 states have internal predecessors, (552), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:37,924 INFO L93 Difference]: Finished difference Result 949 states and 1002 transitions. [2022-10-16 14:21:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-10-16 14:21:37,925 INFO L78 Accepts]: Start accepts. Automaton has has 199 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 198 states have internal predecessors, (552), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 283 [2022-10-16 14:21:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:37,929 INFO L225 Difference]: With dead ends: 949 [2022-10-16 14:21:37,929 INFO L226 Difference]: Without dead ends: 709 [2022-10-16 14:21:37,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 360 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29925 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=28491, Invalid=102191, Unknown=0, NotChecked=0, Total=130682 [2022-10-16 14:21:37,938 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1939 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:37,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 692 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 14:21:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-10-16 14:21:37,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 520. [2022-10-16 14:21:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 514 states have (on average 1.0992217898832686) internal successors, (565), 515 states have internal predecessors, (565), 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 14:21:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 571 transitions. [2022-10-16 14:21:37,975 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 571 transitions. Word has length 283 [2022-10-16 14:21:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:37,975 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 571 transitions. [2022-10-16 14:21:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 199 states, 199 states have (on average 2.7738693467336684) internal successors, (552), 198 states have internal predecessors, (552), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 571 transitions. [2022-10-16 14:21:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-10-16 14:21:37,980 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:37,981 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 9, 8, 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 14:21:38,017 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 14:21:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:38,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:21:38,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash 226483353, now seen corresponding path program 2 times [2022-10-16 14:21:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:38,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348921697] [2022-10-16 14:21:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:21:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:41,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:21:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:21:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5493 backedges. 1560 proven. 212 refuted. 0 times theorem prover too weak. 3721 trivial. 0 not checked. [2022-10-16 14:21:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:21:41,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348921697] [2022-10-16 14:21:41,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348921697] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:21:41,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064175288] [2022-10-16 14:21:41,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:21:41,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:41,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:21:41,925 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 14:21:41,948 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 14:21:42,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:21:42,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:21:42,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 97 conjunts are in the unsatisfiable core [2022-10-16 14:21:42,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:21:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5493 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-10-16 14:21:46,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:21:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5493 backedges. 0 proven. 5405 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-10-16 14:21:56,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064175288] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:21:56,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:21:56,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 97, 97] total 204 [2022-10-16 14:21:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996274471] [2022-10-16 14:21:56,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:21:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2022-10-16 14:21:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:21:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2022-10-16 14:21:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9337, Invalid=32075, Unknown=0, NotChecked=0, Total=41412 [2022-10-16 14:21:56,989 INFO L87 Difference]: Start difference. First operand 520 states and 571 transitions. Second operand has 204 states, 204 states have (on average 2.803921568627451) internal successors, (572), 203 states have internal predecessors, (572), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:22:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:22:15,765 INFO L93 Difference]: Finished difference Result 1151 states and 1251 transitions. [2022-10-16 14:22:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-10-16 14:22:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 204 states, 204 states have (on average 2.803921568627451) internal successors, (572), 203 states have internal predecessors, (572), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 290 [2022-10-16 14:22:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:22:15,771 INFO L225 Difference]: With dead ends: 1151 [2022-10-16 14:22:15,771 INFO L226 Difference]: Without dead ends: 529 [2022-10-16 14:22:15,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44793 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=33111, Invalid=142031, Unknown=0, NotChecked=0, Total=175142 [2022-10-16 14:22:15,789 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1840 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:22:15,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 721 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 14:22:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-10-16 14:22:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 524. [2022-10-16 14:22:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 518 states have (on average 1.0077220077220077) internal successors, (522), 519 states have internal predecessors, (522), 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 14:22:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 528 transitions. [2022-10-16 14:22:15,823 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 528 transitions. Word has length 290 [2022-10-16 14:22:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:22:15,823 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 528 transitions. [2022-10-16 14:22:15,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 2.803921568627451) internal successors, (572), 203 states have internal predecessors, (572), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:22:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 528 transitions. [2022-10-16 14:22:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-10-16 14:22:15,837 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:22:15,837 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 10, 9, 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 14:22:15,874 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 14:22:16,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 14:22:16,052 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:22:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:22:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash 292393713, now seen corresponding path program 3 times [2022-10-16 14:22:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:22:16,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422221811] [2022-10-16 14:22:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:22:16,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:22:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:22:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:22:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:22:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 22243 backedges. 3852 proven. 270 refuted. 0 times theorem prover too weak. 18121 trivial. 0 not checked. [2022-10-16 14:22:22,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:22:22,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422221811] [2022-10-16 14:22:22,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422221811] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:22:22,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827086178] [2022-10-16 14:22:22,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:22:22,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:22:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:22:22,035 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 14:22:22,040 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 14:22:22,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 14:22:22,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:22:22,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 99 conjunts are in the unsatisfiable core [2022-10-16 14:22:22,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:22:22,943 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 14:22:23,202 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-16 14:22:23,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-16 14:22:23,280 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 14:22:23,422 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-16 14:22:23,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-10-16 14:22:23,581 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-16 14:22:23,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 21 [2022-10-16 14:22:23,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 14:22:23,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 treesize of output 3 [2022-10-16 14:22:23,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:22:23,785 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-10-16 14:22:23,786 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 2 case distinctions, treesize of input 54 treesize of output 50 [2022-10-16 14:22:23,808 INFO L356 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-10-16 14:22:23,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-10-16 14:22:23,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:22:23,819 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 14 treesize of output 16 [2022-10-16 14:22:24,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 14:22:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22243 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 22227 trivial. 0 not checked. [2022-10-16 14:22:24,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:22:24,460 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_21| Int) (v_ArrVal_3406 (Array Int Int)) (v_ArrVal_3407 (Array Int Int))) (or (not (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_21| v_ArrVal_3407))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|))) (= .cse0 (select (select .cse1 .cse0) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_21| v_ArrVal_3406) |c_ULTIMATE.start_sll_circular_append_~head#1.base|) |c_ULTIMATE.start_sll_circular_append_~head#1.offset|)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_21|) 0)) (not (< |v_ULTIMATE.start_sll_circular_append_#t~ret9#1.base_21| |c_#StackHeapBarrier|)))) is different from false [2022-10-16 14:22:24,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827086178] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:22:24,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 14:22:24,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2022-10-16 14:22:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119607803] [2022-10-16 14:22:24,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 14:22:24,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 14:22:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:22:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 14:22:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1106, Unknown=2, NotChecked=66, Total=1260 [2022-10-16 14:22:24,469 INFO L87 Difference]: Start difference. First operand 524 states and 528 transitions. Second operand has 32 states, 30 states have (on average 4.033333333333333) internal successors, (121), 26 states have internal predecessors, (121), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:22:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:22:26,022 INFO L93 Difference]: Finished difference Result 1075 states and 1082 transitions. [2022-10-16 14:22:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 14:22:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.033333333333333) internal successors, (121), 26 states have internal predecessors, (121), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 527 [2022-10-16 14:22:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:22:26,025 INFO L225 Difference]: With dead ends: 1075 [2022-10-16 14:22:26,026 INFO L226 Difference]: Without dead ends: 528 [2022-10-16 14:22:26,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1059 GetRequests, 1019 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=1516, Unknown=2, NotChecked=78, Total=1722 [2022-10-16 14:22:26,028 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 16 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:22:26,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 802 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1575 Invalid, 0 Unknown, 69 Unchecked, 1.1s Time] [2022-10-16 14:22:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-10-16 14:22:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-10-16 14:22:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 522 states have (on average 1.0076628352490422) internal successors, (526), 523 states have internal predecessors, (526), 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 14:22:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 532 transitions. [2022-10-16 14:22:26,065 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 532 transitions. Word has length 527 [2022-10-16 14:22:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:22:26,065 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 532 transitions. [2022-10-16 14:22:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.033333333333333) internal successors, (121), 26 states have internal predecessors, (121), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:22:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 532 transitions. [2022-10-16 14:22:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-10-16 14:22:26,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:22:26,071 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 11, 10, 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] [2022-10-16 14:22:26,100 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 14:22:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:22:26,286 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-16 14:22:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:22:26,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1370628711, now seen corresponding path program 1 times [2022-10-16 14:22:26,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:22:26,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486890085] [2022-10-16 14:22:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:22:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:22:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:22:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:22:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 14:22:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 22265 backedges. 4230 proven. 335 refuted. 0 times theorem prover too weak. 17700 trivial. 0 not checked. [2022-10-16 14:22:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:22:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486890085] [2022-10-16 14:22:32,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486890085] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:22:32,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011494708] [2022-10-16 14:22:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:22:32,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:22:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:22:32,561 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 14:22:32,570 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 14:22:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:22:33,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 191 conjunts are in the unsatisfiable core [2022-10-16 14:22:33,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:22:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22265 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-10-16 14:22:49,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:23:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 22265 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-10-16 14:23:27,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011494708] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:23:27,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:23:27,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 191, 191] total 394 [2022-10-16 14:23:27,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108160514] [2022-10-16 14:23:27,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:23:27,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 394 states [2022-10-16 14:23:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:23:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 394 interpolants. [2022-10-16 14:23:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36695, Invalid=118147, Unknown=0, NotChecked=0, Total=154842 [2022-10-16 14:23:27,079 INFO L87 Difference]: Start difference. First operand 528 states and 532 transitions. Second operand has 394 states, 394 states have (on average 2.6751269035532994) internal successors, (1054), 393 states have internal predecessors, (1054), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)