/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/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 0.2.0-b8ad66e [2020-10-23 18:43:28,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:28,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:28,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:28,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:28,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:28,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:28,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:28,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:28,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:28,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:28,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:28,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:28,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:28,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:28,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:28,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:28,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:28,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:28,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:28,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:28,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:28,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:28,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:28,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:28,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:28,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:28,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:28,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:43:28,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:28,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:28,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:28,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:28,989 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:28,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:28,990 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:28,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:28,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:28,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:28,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:28,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:28,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:28,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:28,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:28,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:28,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:28,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:28,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:28,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:28,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:28,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:28,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:28,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:28,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:28,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:28,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:28,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:28,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:28,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:29,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:29,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:29,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:29,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:29,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:29,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-23 18:43:29,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ba87e15/868a6dc52c894fc2bd6568f5db3288d0/FLAG4048f0e59 [2020-10-23 18:43:30,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:30,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-23 18:43:30,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ba87e15/868a6dc52c894fc2bd6568f5db3288d0/FLAG4048f0e59 [2020-10-23 18:43:30,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ba87e15/868a6dc52c894fc2bd6568f5db3288d0 [2020-10-23 18:43:30,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:30,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:30,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:30,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:30,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:30,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:30,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@187eb316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30, skipping insertion in model container [2020-10-23 18:43:30,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:30,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:30,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:30,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:30,865 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:30,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:30,934 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:30,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30 WrapperNode [2020-10-23 18:43:30,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:30,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:30,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:30,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:30,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:30,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:30,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:30,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:31,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:31,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:31,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... [2020-10-23 18:43:31,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:31,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:31,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:31,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:31,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:43:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-10-23 18:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-10-23 18:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:43:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:43:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 18:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-10-23 18:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-10-23 18:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-10-23 18:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-10-23 18:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-10-23 18:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-10-23 18:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-10-23 18:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-10-23 18:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-10-23 18:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-10-23 18:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-23 18:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-10-23 18:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-10-23 18:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-10-23 18:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-10-23 18:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:31,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:31,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:31,996 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:43:31,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:31 BoogieIcfgContainer [2020-10-23 18:43:31,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:32,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:32,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:32,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:32,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:30" (1/3) ... [2020-10-23 18:43:32,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d0eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:32, skipping insertion in model container [2020-10-23 18:43:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:30" (2/3) ... [2020-10-23 18:43:32,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1d0eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:32, skipping insertion in model container [2020-10-23 18:43:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:31" (3/3) ... [2020-10-23 18:43:32,007 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-10-23 18:43:32,018 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:32,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:32,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:32,064 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:32,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:32,065 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:32,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:32,065 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:32,065 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:32,065 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:32,065 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-23 18:43:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 18:43:32,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:32,091 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] [2020-10-23 18:43:32,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1971960154, now seen corresponding path program 1 times [2020-10-23 18:43:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:32,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182105762] [2020-10-23 18:43:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:43:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:32,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182105762] [2020-10-23 18:43:32,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:32,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:43:32,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725606193] [2020-10-23 18:43:32,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:43:32,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:43:32,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:43:32,400 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-10-23 18:43:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:32,699 INFO L93 Difference]: Finished difference Result 111 states and 152 transitions. [2020-10-23 18:43:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:43:32,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-23 18:43:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:32,709 INFO L225 Difference]: With dead ends: 111 [2020-10-23 18:43:32,709 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 18:43:32,713 INFO L677 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 [2020-10-23 18:43:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 18:43:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-23 18:43:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 18:43:32,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-23 18:43:32,757 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2020-10-23 18:43:32,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:32,758 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-23 18:43:32,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:43:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-23 18:43:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 18:43:32,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:32,760 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, 1, 1] [2020-10-23 18:43:32,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:32,761 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:32,762 INFO L82 PathProgramCache]: Analyzing trace with hash 327951077, now seen corresponding path program 1 times [2020-10-23 18:43:32,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:32,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335081820] [2020-10-23 18:43:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 18:43:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:32,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335081820] [2020-10-23 18:43:32,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818403996] [2020-10-23 18:43:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:43:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:33,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-23 18:43:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:43:33,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:43:33,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-10-23 18:43:33,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603135690] [2020-10-23 18:43:33,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:43:33,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:33,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:43:33,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:33,152 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 3 states. [2020-10-23 18:43:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:33,178 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2020-10-23 18:43:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:43:33,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-23 18:43:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:33,181 INFO L225 Difference]: With dead ends: 88 [2020-10-23 18:43:33,181 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 18:43:33,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 18:43:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-23 18:43:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 18:43:33,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-23 18:43:33,193 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 40 [2020-10-23 18:43:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:33,193 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-23 18:43:33,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:43:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-23 18:43:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 18:43:33,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:33,195 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, 1, 1] [2020-10-23 18:43:33,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:43:33,410 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash 193937571, now seen corresponding path program 1 times [2020-10-23 18:43:33,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:33,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974986456] [2020-10-23 18:43:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:33,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 18:43:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:33,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974986456] [2020-10-23 18:43:33,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048888177] [2020-10-23 18:43:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:43:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:33,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:43:33,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:33,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:43:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:43:33,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:43:33,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-10-23 18:43:33,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311476763] [2020-10-23 18:43:33,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:43:33,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:33,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:43:33,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:43:33,850 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 5 states. [2020-10-23 18:43:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:33,978 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2020-10-23 18:43:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:43:33,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-23 18:43:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:33,982 INFO L225 Difference]: With dead ends: 113 [2020-10-23 18:43:33,982 INFO L226 Difference]: Without dead ends: 75 [2020-10-23 18:43:33,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:43:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-23 18:43:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-23 18:43:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-23 18:43:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-23 18:43:33,996 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 40 [2020-10-23 18:43:33,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:33,997 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-23 18:43:33,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:43:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-23 18:43:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 18:43:33,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:33,999 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, 1, 1] [2020-10-23 18:43:34,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:34,202 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash -2097043357, now seen corresponding path program 1 times [2020-10-23 18:43:34,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:34,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844016281] [2020-10-23 18:43:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 18:43:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:34,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844016281] [2020-10-23 18:43:34,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577197519] [2020-10-23 18:43:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-23 18:43:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:43:34,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:34,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:34,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-23 18:43:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718232864] [2020-10-23 18:43:34,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:43:34,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:34,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:43:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:34,484 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-23 18:43:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:34,631 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-10-23 18:43:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:43:34,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-23 18:43:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:34,633 INFO L225 Difference]: With dead ends: 104 [2020-10-23 18:43:34,633 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 18:43:34,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 18:43:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-23 18:43:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 18:43:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-23 18:43:34,643 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 40 [2020-10-23 18:43:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:34,644 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-23 18:43:34,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:43:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-23 18:43:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 18:43:34,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:34,646 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, 1, 1] [2020-10-23 18:43:34,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:34,860 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:34,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1979421573, now seen corresponding path program 2 times [2020-10-23 18:43:34,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:34,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784527520] [2020-10-23 18:43:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 18:43:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:43:34,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784527520] [2020-10-23 18:43:34,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:34,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:43:34,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699742110] [2020-10-23 18:43:34,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:43:34,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:34,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:43:34,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:34,980 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 6 states. [2020-10-23 18:43:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:35,174 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-23 18:43:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:43:35,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-23 18:43:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:35,175 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:43:35,175 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:35,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:43:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:35,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-10-23 18:43:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:35,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:35,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:43:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:35,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:35,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 18:43:35,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:35,293 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:43:35,293 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:43:35,293 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:43:35,293 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:43:35,293 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L270 CegarLoopResult]: At program point L77(line 77) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L77-1(line 77) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L73(lines 73 75) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L65(lines 65 83) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L70-1(line 70) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-10-23 18:43:35,294 INFO L274 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-10-23 18:43:35,295 INFO L274 CegarLoopResult]: For program point L70-4(line 70) no Hoare annotation was computed. [2020-10-23 18:43:35,295 INFO L274 CegarLoopResult]: For program point L70-6(line 70) no Hoare annotation was computed. [2020-10-23 18:43:35,295 INFO L274 CegarLoopResult]: For program point parse_expression_listFINAL(lines 58 86) no Hoare annotation was computed. [2020-10-23 18:43:35,295 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-10-23 18:43:35,295 INFO L277 CegarLoopResult]: At program point L70-8(line 70) the Hoare annotation is: true [2020-10-23 18:43:35,295 INFO L274 CegarLoopResult]: For program point L70-9(line 70) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L270 CegarLoopResult]: At program point parse_expression_listENTRY(lines 58 86) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L67-1(line 67) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L67-3(line 67) no Hoare annotation was computed. [2020-10-23 18:43:35,296 INFO L277 CegarLoopResult]: At program point L67-5(line 67) the Hoare annotation is: true [2020-10-23 18:43:35,296 INFO L274 CegarLoopResult]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point L67-6(line 67) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point parse_expression_listEXIT(lines 58 86) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L277 CegarLoopResult]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L270 CegarLoopResult]: At program point L76(line 76) the Hoare annotation is: (< parse_expression_list_~j~0 (+ parse_expression_list_~start~0 1)) [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point L76-1(line 76) no Hoare annotation was computed. [2020-10-23 18:43:35,297 INFO L274 CegarLoopResult]: For program point L72(lines 72 81) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point L68-2(line 68) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point r_strncpyFINAL(line 42) no Hoare annotation was computed. [2020-10-23 18:43:35,298 INFO L274 CegarLoopResult]: For program point r_strncpyEXIT(line 42) no Hoare annotation was computed. [2020-10-23 18:43:35,299 INFO L277 CegarLoopResult]: At program point r_strncpyENTRY(line 42) the Hoare annotation is: true [2020-10-23 18:43:35,299 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:35,299 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:43:35,299 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:35,299 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:35,299 INFO L277 CegarLoopResult]: At program point L94(line 94) the Hoare annotation is: true [2020-10-23 18:43:35,299 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 87 96) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:43:35,299 INFO L274 CegarLoopResult]: For program point L94-1(line 94) no Hoare annotation was computed. [2020-10-23 18:43:35,300 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 87 96) no Hoare annotation was computed. [2020-10-23 18:43:35,300 INFO L274 CegarLoopResult]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2020-10-23 18:43:35,300 INFO L277 CegarLoopResult]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2020-10-23 18:43:35,300 INFO L274 CegarLoopResult]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2020-10-23 18:43:35,300 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 87 96) no Hoare annotation was computed. [2020-10-23 18:43:35,300 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:43:35,300 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-10-23 18:43:35,301 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-23 18:43:35,301 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2020-10-23 18:43:35,301 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2020-10-23 18:43:35,301 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2020-10-23 18:43:35,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:35 BoogieIcfgContainer [2020-10-23 18:43:35,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:35,313 INFO L168 Benchmark]: Toolchain (without parser) took 4748.88 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.2 MB in the beginning and 74.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 82.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:35,314 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:35,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.47 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:35,316 INFO L168 Benchmark]: Boogie Preprocessor took 106.43 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 111.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:35,316 INFO L168 Benchmark]: RCFGBuilder took 952.69 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 115.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:35,317 INFO L168 Benchmark]: TraceAbstraction took 3311.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 115.6 MB in the beginning and 74.9 MB in the end (delta: 40.7 MB). Peak memory consumption was 72.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:35,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.47 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.43 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 111.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 952.69 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 115.6 MB in the end (delta: -3.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3311.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 115.6 MB in the beginning and 74.9 MB in the end (delta: 40.7 MB). Peak memory consumption was 72.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 271 SDtfs, 70 SDslu, 449 SDs, 0 SdLazy, 299 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 44 PreInvPairs, 54 NumberOfFragments, 62 HoareAnnotationTreeSize, 44 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 18844 SizeOfPredicates, 3 NumberOfNonLiveVariables, 541 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 6/10 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...