/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -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 0.2.2-dev-7390193 [2022-04-04 18:57:23,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-04 18:57:23,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-04 18:57:23,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-04 18:57:23,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-04 18:57:23,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-04 18:57:23,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-04 18:57:23,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-04 18:57:24,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-04 18:57:24,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-04 18:57:24,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-04 18:57:24,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-04 18:57:24,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-04 18:57:24,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-04 18:57:24,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-04 18:57:24,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-04 18:57:24,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-04 18:57:24,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-04 18:57:24,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-04 18:57:24,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-04 18:57:24,023 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-04 18:57:24,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-04 18:57:24,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-04 18:57:24,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-04 18:57:24,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-04 18:57:24,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-04 18:57:24,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-04 18:57:24,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-04 18:57:24,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-04 18:57:24,042 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 [2022-04-04 18:57:24,071 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-04 18:57:24,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-04 18:57:24,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-04 18:57:24,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-04 18:57:24,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-04 18:57:24,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-04 18:57:24,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-04 18:57:24,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-04 18:57:24,073 INFO L138 SettingsManager]: * Use SBE=true [2022-04-04 18:57:24,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-04 18:57:24,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-04 18:57:24,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-04 18:57:24,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-04 18:57:24,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-04 18:57:24,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-04 18:57:24,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-04 18:57:24,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-04 18:57:24,076 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-04 18:57:24,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-04 18:57:24,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-04 18:57:24,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-04 18:57:24,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-04 18:57:24,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-04 18:57:24,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-04 18:57:24,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 18:57:24,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-04 18:57:24,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-04 18:57:24,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-04 18:57:24,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-04 18:57:24,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-04 18:57:24,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-04 18:57:24,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-04 18:57:24,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-04 18:57:24,341 INFO L275 PluginConnector]: CDTParser initialized [2022-04-04 18:57:24,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-04-04 18:57:24,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37abe28f8/990d05eb48634d53a66b4c1eb9711227/FLAG6d94d380e [2022-04-04 18:57:24,786 INFO L306 CDTParser]: Found 1 translation units. [2022-04-04 18:57:24,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-04-04 18:57:24,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37abe28f8/990d05eb48634d53a66b4c1eb9711227/FLAG6d94d380e [2022-04-04 18:57:24,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37abe28f8/990d05eb48634d53a66b4c1eb9711227 [2022-04-04 18:57:24,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-04 18:57:24,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-04 18:57:24,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-04 18:57:24,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-04 18:57:24,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-04 18:57:24,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 06:57:24" (1/1) ... [2022-04-04 18:57:24,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be2431b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:24, skipping insertion in model container [2022-04-04 18:57:24,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.04 06:57:24" (1/1) ... [2022-04-04 18:57:24,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-04 18:57:24,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-04 18:57:25,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-04-04 18:57:25,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 18:57:25,128 INFO L203 MainTranslator]: Completed pre-run [2022-04-04 18:57:25,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-04-04 18:57:25,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-04 18:57:25,177 INFO L208 MainTranslator]: Completed translation [2022-04-04 18:57:25,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25 WrapperNode [2022-04-04 18:57:25,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-04 18:57:25,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-04 18:57:25,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-04 18:57:25,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-04 18:57:25,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-04 18:57:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-04 18:57:25,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-04 18:57:25,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-04 18:57:25,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (1/1) ... [2022-04-04 18:57:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-04 18:57:25,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 18:57:25,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-04 18:57:25,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-04 18:57:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-04 18:57:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-04 18:57:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-04 18:57:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-04 18:57:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-04-04 18:57:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-04-04 18:57:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-04 18:57:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-04-04 18:57:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-04-04 18:57:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-04 18:57:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-04 18:57:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-04 18:57:25,374 INFO L234 CfgBuilder]: Building ICFG [2022-04-04 18:57:25,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-04 18:57:25,561 INFO L275 CfgBuilder]: Performing block encoding [2022-04-04 18:57:25,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-04 18:57:25,566 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-04 18:57:25,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 06:57:25 BoogieIcfgContainer [2022-04-04 18:57:25,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-04 18:57:25,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-04 18:57:25,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-04 18:57:25,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-04 18:57:25,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.04 06:57:24" (1/3) ... [2022-04-04 18:57:25,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5456c2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 06:57:25, skipping insertion in model container [2022-04-04 18:57:25,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.04 06:57:25" (2/3) ... [2022-04-04 18:57:25,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5456c2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.04 06:57:25, skipping insertion in model container [2022-04-04 18:57:25,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.04 06:57:25" (3/3) ... [2022-04-04 18:57:25,575 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-04-04 18:57:25,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-04 18:57:25,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-04 18:57:25,638 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-04 18:57:25,645 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-04 18:57:25,646 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-04 18:57:25,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-04 18:57:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-04 18:57:25,668 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 18:57:25,668 INFO L499 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] [2022-04-04 18:57:25,669 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 18:57:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 18:57:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash -541205821, now seen corresponding path program 1 times [2022-04-04 18:57:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 18:57:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137921402] [2022-04-04 18:57:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 18:57:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 18:57:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-04-04 18:57:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:25,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 18:57:25,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137921402] [2022-04-04 18:57:25,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137921402] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 18:57:25,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 18:57:25,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-04 18:57:25,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140226261] [2022-04-04 18:57:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 18:57:25,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-04 18:57:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 18:57:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-04 18:57:25,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-04 18:57:25,938 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 18:57:26,010 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2022-04-04 18:57:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-04 18:57:26,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-04-04 18:57:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 18:57:26,025 INFO L225 Difference]: With dead ends: 102 [2022-04-04 18:57:26,025 INFO L226 Difference]: Without dead ends: 47 [2022-04-04 18:57:26,029 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-04 18:57:26,032 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 18:57:26,032 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 18:57:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-04-04 18:57:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-04-04 18:57:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-04 18:57:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-04-04 18:57:26,071 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2022-04-04 18:57:26,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 18:57:26,072 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-04-04 18:57:26,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-04-04 18:57:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-04 18:57:26,076 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 18:57:26,076 INFO L499 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] [2022-04-04 18:57:26,076 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-04 18:57:26,077 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 18:57:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 18:57:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1555699344, now seen corresponding path program 1 times [2022-04-04 18:57:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 18:57:26,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693297194] [2022-04-04 18:57:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:26,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 18:57:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 18:57:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-04-04 18:57:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 18:57:26,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693297194] [2022-04-04 18:57:26,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693297194] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 18:57:26,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 18:57:26,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-04 18:57:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213552304] [2022-04-04 18:57:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 18:57:26,205 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-04 18:57:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 18:57:26,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-04 18:57:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-04 18:57:26,206 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 18:57:26,316 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2022-04-04 18:57:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-04 18:57:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-04-04 18:57:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 18:57:26,319 INFO L225 Difference]: With dead ends: 88 [2022-04-04 18:57:26,319 INFO L226 Difference]: Without dead ends: 49 [2022-04-04 18:57:26,323 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-04 18:57:26,325 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-04 18:57:26,326 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-04 18:57:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-04 18:57:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-04-04 18:57:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-04 18:57:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-04-04 18:57:26,342 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2022-04-04 18:57:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 18:57:26,343 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-04-04 18:57:26,343 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-04-04 18:57:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-04 18:57:26,345 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 18:57:26,345 INFO L499 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] [2022-04-04 18:57:26,346 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-04 18:57:26,346 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 18:57:26,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 18:57:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1615735470, now seen corresponding path program 1 times [2022-04-04 18:57:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 18:57:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921180259] [2022-04-04 18:57:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:26,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 18:57:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 18:57:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-04 18:57:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 18:57:26,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921180259] [2022-04-04 18:57:26,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921180259] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 18:57:26,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992991688] [2022-04-04 18:57:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:26,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 18:57:26,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 18:57:26,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 18:57:26,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-04 18:57:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-04 18:57:26,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 18:57:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-04 18:57:26,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-04 18:57:26,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992991688] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 18:57:26,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-04 18:57:26,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-04 18:57:26,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858197443] [2022-04-04 18:57:26,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 18:57:26,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-04 18:57:26,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 18:57:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-04 18:57:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-04 18:57:26,657 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 18:57:26,665 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2022-04-04 18:57:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-04 18:57:26,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-04-04 18:57:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 18:57:26,667 INFO L225 Difference]: With dead ends: 84 [2022-04-04 18:57:26,667 INFO L226 Difference]: Without dead ends: 49 [2022-04-04 18:57:26,667 INFO L912 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 [2022-04-04 18:57:26,668 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-04 18:57:26,669 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-04 18:57:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-04 18:57:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-04-04 18:57:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-04 18:57:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-04-04 18:57:26,673 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2022-04-04 18:57:26,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 18:57:26,674 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-04-04 18:57:26,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-04-04 18:57:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-04 18:57:26,675 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 18:57:26,675 INFO L499 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] [2022-04-04 18:57:26,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-04 18:57:26,896 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 18:57:26,896 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 18:57:26,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 18:57:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1357570032, now seen corresponding path program 1 times [2022-04-04 18:57:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 18:57:26,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607306227] [2022-04-04 18:57:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 18:57:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 18:57:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-04 18:57:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:26,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 18:57:26,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607306227] [2022-04-04 18:57:26,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607306227] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-04 18:57:26,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355462935] [2022-04-04 18:57:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-04 18:57:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-04 18:57:26,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-04 18:57:26,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-04 18:57:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-04 18:57:27,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-04 18:57:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:27,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-04 18:57:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-04 18:57:27,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355462935] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-04 18:57:27,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-04 18:57:27,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-04 18:57:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070446161] [2022-04-04 18:57:27,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-04 18:57:27,258 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-04 18:57:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 18:57:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-04 18:57:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-04 18:57:27,259 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-04 18:57:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 18:57:27,410 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2022-04-04 18:57:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-04 18:57:27,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-04-04 18:57:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 18:57:27,411 INFO L225 Difference]: With dead ends: 95 [2022-04-04 18:57:27,411 INFO L226 Difference]: Without dead ends: 55 [2022-04-04 18:57:27,412 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-04-04 18:57:27,413 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 54 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-04 18:57:27,413 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 70 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-04 18:57:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-04 18:57:27,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-04 18:57:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-04 18:57:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2022-04-04 18:57:27,418 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 38 [2022-04-04 18:57:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 18:57:27,418 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2022-04-04 18:57:27,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-04 18:57:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-04-04 18:57:27,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-04 18:57:27,420 INFO L491 BasicCegarLoop]: Found error trace [2022-04-04 18:57:27,420 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-04 18:57:27,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-04 18:57:27,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-04 18:57:27,640 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-04 18:57:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-04 18:57:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -688602954, now seen corresponding path program 2 times [2022-04-04 18:57:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-04 18:57:27,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852266652] [2022-04-04 18:57:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-04 18:57:27,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-04 18:57:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-04 18:57:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-04-04 18:57:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-04 18:57:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-04 18:57:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-04 18:57:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852266652] [2022-04-04 18:57:27,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852266652] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-04 18:57:27,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-04 18:57:27,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-04 18:57:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068921254] [2022-04-04 18:57:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-04 18:57:27,731 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-04 18:57:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-04 18:57:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-04 18:57:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-04 18:57:27,732 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-04 18:57:27,860 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-04-04 18:57:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-04 18:57:27,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-04-04 18:57:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-04 18:57:27,861 INFO L225 Difference]: With dead ends: 66 [2022-04-04 18:57:27,861 INFO L226 Difference]: Without dead ends: 0 [2022-04-04 18:57:27,861 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-04 18:57:27,862 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 77 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-04 18:57:27,863 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 62 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-04 18:57:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-04 18:57:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-04 18:57:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-04 18:57:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-04 18:57:27,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2022-04-04 18:57:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-04 18:57:27,864 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-04 18:57:27,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-04 18:57:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-04 18:57:27,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-04 18:57:27,866 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-04 18:57:27,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-04 18:57:27,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-04 18:57:27,892 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-04 18:57:27,892 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-04 18:57:27,892 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-04 18:57:27,892 INFO L882 garLoopResultBuilder]: For program point r_strncpyFINAL(line 42) no Hoare annotation was computed. [2022-04-04 18:57:27,892 INFO L882 garLoopResultBuilder]: For program point r_strncpyEXIT(line 42) no Hoare annotation was computed. [2022-04-04 18:57:27,892 INFO L885 garLoopResultBuilder]: At program point r_strncpyENTRY(line 42) the Hoare annotation is: true [2022-04-04 18:57:27,892 INFO L885 garLoopResultBuilder]: At program point L94(line 94) the Hoare annotation is: true [2022-04-04 18:57:27,893 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 87 96) the Hoare annotation is: true [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point L94-1(line 94) no Hoare annotation was computed. [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 87 96) no Hoare annotation was computed. [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point L90-2(lines 90 92) no Hoare annotation was computed. [2022-04-04 18:57:27,893 INFO L885 garLoopResultBuilder]: At program point L90-3(lines 90 92) the Hoare annotation is: true [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point L90-4(lines 90 92) no Hoare annotation was computed. [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 87 96) no Hoare annotation was computed. [2022-04-04 18:57:27,893 INFO L878 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-04-04 18:57:27,893 INFO L882 garLoopResultBuilder]: For program point L77-1(line 77) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L65(lines 65 83) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point parse_expression_listFINAL(lines 58 86) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2022-04-04 18:57:27,894 INFO L885 garLoopResultBuilder]: At program point L70-8(line 70) the Hoare annotation is: true [2022-04-04 18:57:27,894 INFO L882 garLoopResultBuilder]: For program point L70-9(line 70) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L885 garLoopResultBuilder]: At program point parse_expression_listENTRY(lines 58 86) the Hoare annotation is: true [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L71-4(lines 65 83) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2022-04-04 18:57:27,895 INFO L885 garLoopResultBuilder]: At program point L67-5(line 67) the Hoare annotation is: true [2022-04-04 18:57:27,895 INFO L882 garLoopResultBuilder]: For program point L63-1(lines 63 84) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L67-6(line 67) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L63-2(lines 63 84) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point parse_expression_listEXIT(lines 58 86) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L885 garLoopResultBuilder]: At program point L63-4(lines 63 84) the Hoare annotation is: true [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L63-5(lines 63 84) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L878 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (not (<= (+ parse_expression_list_~start~0 1) parse_expression_list_~j~0)) [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L72(lines 72 81) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point L68-2(line 68) no Hoare annotation was computed. [2022-04-04 18:57:27,896 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-04 18:57:27,897 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-04-04 18:57:27,897 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2022-04-04 18:57:27,897 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 19) no Hoare annotation was computed. [2022-04-04 18:57:27,898 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 19) no Hoare annotation was computed. [2022-04-04 18:57:27,898 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-04 18:57:27,900 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-04-04 18:57:27,901 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-04 18:57:27,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.04 06:57:27 BoogieIcfgContainer [2022-04-04 18:57:27,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-04 18:57:27,909 INFO L158 Benchmark]: Toolchain (without parser) took 3095.64ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 114.7MB in the beginning and 130.5MB in the end (delta: -15.8MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2022-04-04 18:57:27,909 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-04 18:57:27,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.49ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 114.6MB in the beginning and 194.7MB in the end (delta: -80.2MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-04-04 18:57:27,909 INFO L158 Benchmark]: Boogie Preprocessor took 37.97ms. Allocated memory is still 222.3MB. Free memory was 194.7MB in the beginning and 192.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-04 18:57:27,909 INFO L158 Benchmark]: RCFGBuilder took 351.72ms. Allocated memory is still 222.3MB. Free memory was 192.7MB in the beginning and 176.7MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-04-04 18:57:27,910 INFO L158 Benchmark]: TraceAbstraction took 2338.65ms. Allocated memory is still 222.3MB. Free memory was 176.3MB in the beginning and 130.5MB in the end (delta: 45.8MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. [2022-04-04 18:57:27,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 168.8MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 361.49ms. Allocated memory was 168.8MB in the beginning and 222.3MB in the end (delta: 53.5MB). Free memory was 114.6MB in the beginning and 194.7MB in the end (delta: -80.2MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.97ms. Allocated memory is still 222.3MB. Free memory was 194.7MB in the beginning and 192.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 351.72ms. Allocated memory is still 222.3MB. Free memory was 192.7MB in the beginning and 176.7MB in the end (delta: 16.1MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2338.65ms. Allocated memory is still 222.3MB. Free memory was 176.3MB in the beginning and 130.5MB in the end (delta: 45.8MB). Peak memory consumption was 46.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 242 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 235 mSDsluCounter, 368 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 374 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 272 mSDtfsCounter, 374 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 40 PreInvPairs, 52 NumberOfFragments, 30 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 17/21 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-04-04 18:57:27,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...