/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:43:28,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:28,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:28,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:28,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:28,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:28,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:28,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:28,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:28,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:28,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:28,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:28,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:28,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:28,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:28,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:28,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:28,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:28,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:28,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:28,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:28,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:28,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:28,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:28,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:43:28,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:43:28,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:43:28,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:43:28,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:43:28,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:43:28,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:43:28,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:43:28,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:43:28,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:43:28,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:43:28,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:43:28,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:43:28,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:43:28,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:28,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:28,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:28,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:43:28,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:28,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:28,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:28,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:28,243 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:28,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:28,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:28,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:28,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:28,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:28,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:28,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:28,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:28,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:28,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:28,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:28,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:28,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:28,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:28,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:28,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:28,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:28,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:28,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:28,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:28,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:28,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:28,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:28,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:28,818 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:28,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:28,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3d114be/4794e5f2a1df42de9e084811c2bf8cfb/FLAGfdf372675 [2020-09-04 13:43:29,536 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:29,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:29,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3d114be/4794e5f2a1df42de9e084811c2bf8cfb/FLAGfdf372675 [2020-09-04 13:43:29,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f3d114be/4794e5f2a1df42de9e084811c2bf8cfb [2020-09-04 13:43:29,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:29,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:29,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:29,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:29,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:29,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:29" (1/1) ... [2020-09-04 13:43:29,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:29, skipping insertion in model container [2020-09-04 13:43:29,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:29" (1/1) ... [2020-09-04 13:43:29,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:29,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:30,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:30,198 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:30,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:30,357 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:30,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30 WrapperNode [2020-09-04 13:43:30,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:30,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:30,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:30,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:30,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... [2020-09-04 13:43:30,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:30,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:30,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:30,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:30,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-04 13:43:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-04 13:43:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 13:43:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-04 13:43:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-04 13:43:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-04 13:43:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-04 13:43:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-04 13:43:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-04 13:43:30,510 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-04 13:43:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-04 13:43:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-04 13:43:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-04 13:43:30,511 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-04 13:43:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-04 13:43:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-04 13:43:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-04 13:43:30,512 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-04 13:43:30,513 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-04 13:43:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:30,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:30,978 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 13:43:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:30 BoogieIcfgContainer [2020-09-04 13:43:30,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:30,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:30,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:30,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:30,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:29" (1/3) ... [2020-09-04 13:43:30,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69438fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:30, skipping insertion in model container [2020-09-04 13:43:30,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:30" (2/3) ... [2020-09-04 13:43:30,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69438fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:30, skipping insertion in model container [2020-09-04 13:43:30,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:30" (3/3) ... [2020-09-04 13:43:30,993 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-04 13:43:31,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:31,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:31,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:31,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:31,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:31,067 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:31,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:31,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:31,067 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:31,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:31,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-09-04 13:43:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 13:43:31,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:31,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:31,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1663477819, now seen corresponding path program 1 times [2020-09-04 13:43:31,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:31,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915801541] [2020-09-04 13:43:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 13:43:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:31,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915801541] [2020-09-04 13:43:31,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:31,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:43:31,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492074653] [2020-09-04 13:43:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:43:31,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:31,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:43:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:43:31,412 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-09-04 13:43:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:31,629 INFO L93 Difference]: Finished difference Result 104 states and 142 transitions. [2020-09-04 13:43:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:43:31,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-04 13:43:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:31,643 INFO L225 Difference]: With dead ends: 104 [2020-09-04 13:43:31,644 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 13:43:31,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:43:31,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 13:43:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-04 13:43:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 13:43:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-09-04 13:43:31,709 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 32 [2020-09-04 13:43:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:31,709 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-09-04 13:43:31,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:43:31,710 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-09-04 13:43:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:43:31,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:31,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:31,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:31,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:31,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:31,714 INFO L82 PathProgramCache]: Analyzing trace with hash 227833136, now seen corresponding path program 1 times [2020-09-04 13:43:31,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:31,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695470290] [2020-09-04 13:43:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:43:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:31,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695470290] [2020-09-04 13:43:31,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136809512] [2020-09-04 13:43:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:31,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2020-09-04 13:43:31,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:43:32,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:32,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-09-04 13:43:32,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950108352] [2020-09-04 13:43:32,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:43:32,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:43:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:32,023 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 3 states. [2020-09-04 13:43:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:32,040 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-09-04 13:43:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:43:32,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-09-04 13:43:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:32,042 INFO L225 Difference]: With dead ends: 84 [2020-09-04 13:43:32,042 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 13:43:32,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 13:43:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-09-04 13:43:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-04 13:43:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-09-04 13:43:32,054 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2020-09-04 13:43:32,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:32,054 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-09-04 13:43:32,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:43:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-09-04 13:43:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:43:32,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:32,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:43:32,271 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 446687854, now seen corresponding path program 1 times [2020-09-04 13:43:32,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590957270] [2020-09-04 13:43:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:43:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590957270] [2020-09-04 13:43:32,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531562152] [2020-09-04 13:43:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:43:32,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:32,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:43:32,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:32,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-09-04 13:43:32,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906274157] [2020-09-04 13:43:32,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:32,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:32,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:32,569 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2020-09-04 13:43:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:32,689 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2020-09-04 13:43:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:32,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-04 13:43:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:32,694 INFO L225 Difference]: With dead ends: 109 [2020-09-04 13:43:32,694 INFO L226 Difference]: Without dead ends: 73 [2020-09-04 13:43:32,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:43:32,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-04 13:43:32,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2020-09-04 13:43:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 13:43:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-09-04 13:43:32,711 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2020-09-04 13:43:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:32,712 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-09-04 13:43:32,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-09-04 13:43:32,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:43:32,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:32,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:32,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:32,928 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash -140118160, now seen corresponding path program 1 times [2020-09-04 13:43:32,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:32,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307025098] [2020-09-04 13:43:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 13:43:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:32,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307025098] [2020-09-04 13:43:32,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413491371] [2020-09-04 13:43:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:43:33,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:33,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:33,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-09-04 13:43:33,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759920645] [2020-09-04 13:43:33,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:33,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:33,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:33,090 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 6 states. [2020-09-04 13:43:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:33,215 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2020-09-04 13:43:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:43:33,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-04 13:43:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:33,217 INFO L225 Difference]: With dead ends: 100 [2020-09-04 13:43:33,217 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 13:43:33,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:43:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 13:43:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-09-04 13:43:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 13:43:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-09-04 13:43:33,227 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 38 [2020-09-04 13:43:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:33,227 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-09-04 13:43:33,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:33,227 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-09-04 13:43:33,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 13:43:33,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:33,229 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:33,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:33,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:33,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1477568014, now seen corresponding path program 2 times [2020-09-04 13:43:33,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:33,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618420606] [2020-09-04 13:43:33,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-04 13:43:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:33,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618420606] [2020-09-04 13:43:33,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556757995] [2020-09-04 13:43:33,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:33,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-04 13:43:33,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:33,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:43:33,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:43:33,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:33,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2020-09-04 13:43:33,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580767612] [2020-09-04 13:43:33,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:33,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:33,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:33,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:43:33,698 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-09-04 13:43:33,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:33,841 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-09-04 13:43:33,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:33,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-04 13:43:33,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:33,843 INFO L225 Difference]: With dead ends: 147 [2020-09-04 13:43:33,844 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 13:43:33,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:43:33,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 13:43:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2020-09-04 13:43:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 13:43:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-09-04 13:43:33,853 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 40 [2020-09-04 13:43:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:33,854 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-09-04 13:43:33,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-09-04 13:43:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 13:43:33,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:33,856 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:34,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:34,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1128455540, now seen corresponding path program 1 times [2020-09-04 13:43:34,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344788616] [2020-09-04 13:43:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-04 13:43:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344788616] [2020-09-04 13:43:34,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558166993] [2020-09-04 13:43:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:43:34,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:34,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-09-04 13:43:34,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449147662] [2020-09-04 13:43:34,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:43:34,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:34,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:43:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:43:34,252 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 7 states. [2020-09-04 13:43:34,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:34,377 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2020-09-04 13:43:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:43:34,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-04 13:43:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:34,379 INFO L225 Difference]: With dead ends: 116 [2020-09-04 13:43:34,379 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 13:43:34,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:43:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 13:43:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-09-04 13:43:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-04 13:43:34,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-09-04 13:43:34,387 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 40 [2020-09-04 13:43:34,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:34,388 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-09-04 13:43:34,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:43:34,388 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-09-04 13:43:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 13:43:34,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:34,389 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-04 13:43:34,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:43:34,593 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash 34367350, now seen corresponding path program 2 times [2020-09-04 13:43:34,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:34,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022227858] [2020-09-04 13:43:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:43:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:34,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022227858] [2020-09-04 13:43:34,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182983225] [2020-09-04 13:43:34,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:34,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-04 13:43:34,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:34,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:43:34,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 13:43:34,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:34,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-09-04 13:43:34,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238988070] [2020-09-04 13:43:34,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:34,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:34,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:34,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:43:34,857 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 5 states. [2020-09-04 13:43:34,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:34,989 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2020-09-04 13:43:34,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:43:34,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-04 13:43:34,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:34,991 INFO L225 Difference]: With dead ends: 134 [2020-09-04 13:43:34,991 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 13:43:34,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:43:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 13:43:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-09-04 13:43:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 13:43:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-09-04 13:43:34,999 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 42 [2020-09-04 13:43:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:34,999 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-09-04 13:43:34,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-09-04 13:43:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 13:43:35,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:35,001 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:35,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:35,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:35,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:35,215 INFO L82 PathProgramCache]: Analyzing trace with hash -615754617, now seen corresponding path program 1 times [2020-09-04 13:43:35,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:35,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411269378] [2020-09-04 13:43:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-04 13:43:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:35,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411269378] [2020-09-04 13:43:35,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113111503] [2020-09-04 13:43:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:43:35,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:35,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:35,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-09-04 13:43:35,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345211199] [2020-09-04 13:43:35,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:43:35,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:43:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:35,395 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 8 states. [2020-09-04 13:43:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:35,510 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2020-09-04 13:43:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:35,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-04 13:43:35,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:35,512 INFO L225 Difference]: With dead ends: 108 [2020-09-04 13:43:35,512 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 13:43:35,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:43:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 13:43:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-09-04 13:43:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 13:43:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-09-04 13:43:35,519 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 47 [2020-09-04 13:43:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:35,519 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-09-04 13:43:35,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:43:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-09-04 13:43:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 13:43:35,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:35,521 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:35,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:35,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:35,735 INFO L82 PathProgramCache]: Analyzing trace with hash -900340667, now seen corresponding path program 2 times [2020-09-04 13:43:35,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:35,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086914275] [2020-09-04 13:43:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:43:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:35,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086914275] [2020-09-04 13:43:35,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242675810] [2020-09-04 13:43:35,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:35,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-04 13:43:35,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:35,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:43:35,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-04 13:43:35,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:35,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2020-09-04 13:43:35,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600211609] [2020-09-04 13:43:35,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:43:35,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:35,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:43:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:43:35,986 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 6 states. [2020-09-04 13:43:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:36,129 INFO L93 Difference]: Finished difference Result 160 states and 200 transitions. [2020-09-04 13:43:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:43:36,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-09-04 13:43:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:36,134 INFO L225 Difference]: With dead ends: 160 [2020-09-04 13:43:36,135 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 13:43:36,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:43:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 13:43:36,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 83. [2020-09-04 13:43:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-04 13:43:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2020-09-04 13:43:36,160 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 49 [2020-09-04 13:43:36,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:36,160 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2020-09-04 13:43:36,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:43:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2020-09-04 13:43:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 13:43:36,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:36,164 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:36,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-09-04 13:43:36,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1705682887, now seen corresponding path program 1 times [2020-09-04 13:43:36,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:36,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919989302] [2020-09-04 13:43:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:43:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:36,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919989302] [2020-09-04 13:43:36,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760670800] [2020-09-04 13:43:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:36,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:43:36,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:36,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:43:36,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-09-04 13:43:36,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368454630] [2020-09-04 13:43:36,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:43:36,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:43:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:43:36,562 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand 9 states. [2020-09-04 13:43:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:36,702 INFO L93 Difference]: Finished difference Result 154 states and 192 transitions. [2020-09-04 13:43:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:43:36,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-04 13:43:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:36,705 INFO L225 Difference]: With dead ends: 154 [2020-09-04 13:43:36,705 INFO L226 Difference]: Without dead ends: 86 [2020-09-04 13:43:36,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:43:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-04 13:43:36,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-09-04 13:43:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 13:43:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2020-09-04 13:43:36,711 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 49 [2020-09-04 13:43:36,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:36,712 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2020-09-04 13:43:36,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:43:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2020-09-04 13:43:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-04 13:43:36,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:36,713 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:36,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:36,928 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1198571515, now seen corresponding path program 2 times [2020-09-04 13:43:36,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:36,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418171537] [2020-09-04 13:43:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 13:43:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:43:37,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418171537] [2020-09-04 13:43:37,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779757537] [2020-09-04 13:43:37,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:37,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-09-04 13:43:37,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:43:37,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:43:37,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:43:37,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:43:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-04 13:43:37,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:43:37,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2020-09-04 13:43:37,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806798848] [2020-09-04 13:43:37,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:43:37,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:43:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:43:37,154 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 5 states. [2020-09-04 13:43:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:37,213 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-09-04 13:43:37,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:43:37,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-04 13:43:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:37,214 INFO L225 Difference]: With dead ends: 86 [2020-09-04 13:43:37,214 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:43:37,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:43:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:43:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:43:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:43:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:43:37,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-09-04 13:43:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:37,218 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:43:37,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:43:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:43:37,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:43:37,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:43:37,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:43:37,528 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-04 13:43:37,528 INFO L268 CegarLoopResult]: For program point L60-2(line 60) no Hoare annotation was computed. [2020-09-04 13:43:37,529 INFO L268 CegarLoopResult]: For program point L60-4(lines 54 72) no Hoare annotation was computed. [2020-09-04 13:43:37,529 INFO L268 CegarLoopResult]: For program point L56-1(line 56) no Hoare annotation was computed. [2020-09-04 13:43:37,529 INFO L268 CegarLoopResult]: For program point L56-3(line 56) no Hoare annotation was computed. [2020-09-04 13:43:37,529 INFO L271 CegarLoopResult]: At program point L56-5(line 56) the Hoare annotation is: true [2020-09-04 13:43:37,529 INFO L268 CegarLoopResult]: For program point L52-1(lines 52 73) no Hoare annotation was computed. [2020-09-04 13:43:37,530 INFO L268 CegarLoopResult]: For program point L56-6(line 56) no Hoare annotation was computed. [2020-09-04 13:43:37,530 INFO L268 CegarLoopResult]: For program point L52-2(lines 52 73) no Hoare annotation was computed. [2020-09-04 13:43:37,530 INFO L271 CegarLoopResult]: At program point L52-4(lines 52 73) the Hoare annotation is: true [2020-09-04 13:43:37,530 INFO L268 CegarLoopResult]: For program point L52-5(lines 52 73) no Hoare annotation was computed. [2020-09-04 13:43:37,530 INFO L264 CegarLoopResult]: At program point L65(line 65) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-09-04 13:43:37,532 INFO L268 CegarLoopResult]: For program point L65-1(line 65) no Hoare annotation was computed. [2020-09-04 13:43:37,532 INFO L268 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2020-09-04 13:43:37,532 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-04 13:43:37,532 INFO L268 CegarLoopResult]: For program point L57-2(line 57) no Hoare annotation was computed. [2020-09-04 13:43:37,533 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-09-04 13:43:37,533 INFO L268 CegarLoopResult]: For program point L66-1(line 66) no Hoare annotation was computed. [2020-09-04 13:43:37,533 INFO L268 CegarLoopResult]: For program point parse_expression_listFINAL(lines 47 75) no Hoare annotation was computed. [2020-09-04 13:43:37,533 INFO L268 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-09-04 13:43:37,533 INFO L264 CegarLoopResult]: At program point parse_expression_listENTRY(lines 47 75) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-04 13:43:37,533 INFO L268 CegarLoopResult]: For program point L54(lines 54 72) no Hoare annotation was computed. [2020-09-04 13:43:37,533 INFO L268 CegarLoopResult]: For program point parse_expression_listEXIT(lines 47 75) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L59-1(line 59) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L59-2(line 59) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L59-4(line 59) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L59-6(line 59) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-04 13:43:37,534 INFO L271 CegarLoopResult]: At program point L59-8(line 59) the Hoare annotation is: true [2020-09-04 13:43:37,534 INFO L268 CegarLoopResult]: For program point L59-9(line 59) no Hoare annotation was computed. [2020-09-04 13:43:37,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:37,535 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 13:43:37,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:37,536 INFO L268 CegarLoopResult]: For program point r_strncpyFINAL(line 31) no Hoare annotation was computed. [2020-09-04 13:43:37,536 INFO L268 CegarLoopResult]: For program point r_strncpyEXIT(line 31) no Hoare annotation was computed. [2020-09-04 13:43:37,536 INFO L271 CegarLoopResult]: At program point r_strncpyENTRY(line 31) the Hoare annotation is: true [2020-09-04 13:43:37,536 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:43:37,536 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:43:37,537 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:43:37,537 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:43:37,537 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 76 85) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-04 13:43:37,537 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 76 85) no Hoare annotation was computed. [2020-09-04 13:43:37,537 INFO L271 CegarLoopResult]: At program point L83(line 83) the Hoare annotation is: true [2020-09-04 13:43:37,537 INFO L268 CegarLoopResult]: For program point L83-1(line 83) no Hoare annotation was computed. [2020-09-04 13:43:37,537 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 81) no Hoare annotation was computed. [2020-09-04 13:43:37,538 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 76 85) no Hoare annotation was computed. [2020-09-04 13:43:37,538 INFO L271 CegarLoopResult]: At program point L79-3(lines 79 81) the Hoare annotation is: true [2020-09-04 13:43:37,538 INFO L268 CegarLoopResult]: For program point L79-4(lines 79 81) no Hoare annotation was computed. [2020-09-04 13:43:37,538 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-04 13:43:37,538 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-04 13:43:37,539 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-04 13:43:37,539 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-04 13:43:37,539 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-04 13:43:37,539 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-04 13:43:37,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:37 BoogieIcfgContainer [2020-09-04 13:43:37,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:37,560 INFO L168 Benchmark]: Toolchain (without parser) took 7690.73 ms. Allocated memory was 147.3 MB in the beginning and 277.3 MB in the end (delta: 130.0 MB). Free memory was 103.3 MB in the beginning and 118.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:37,560 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:43:37,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.37 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 103.1 MB in the beginning and 179.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:37,562 INFO L168 Benchmark]: Boogie Preprocessor took 57.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:37,563 INFO L168 Benchmark]: RCFGBuilder took 566.97 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 147.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:37,564 INFO L168 Benchmark]: TraceAbstraction took 6571.60 ms. Allocated memory was 202.4 MB in the beginning and 277.3 MB in the end (delta: 75.0 MB). Free memory was 146.6 MB in the beginning and 118.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:37,567 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 489.37 ms. Allocated memory was 147.3 MB in the beginning and 202.4 MB in the end (delta: 55.1 MB). Free memory was 103.1 MB in the beginning and 179.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.52 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 176.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 566.97 ms. Allocated memory is still 202.4 MB. Free memory was 176.5 MB in the beginning and 147.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6571.60 ms. Allocated memory was 202.4 MB in the beginning and 277.3 MB in the end (delta: 75.0 MB). Free memory was 146.6 MB in the beginning and 118.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.3s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 562 SDtfs, 251 SDslu, 1336 SDs, 0 SdLazy, 769 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 532 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 97 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 64 PreInvPairs, 94 NumberOfFragments, 35 HoareAnnotationTreeSize, 64 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 896 NumberOfCodeBlocks, 858 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 62932 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1443 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 72/188 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...