/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:01:28,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:01:28,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:01:28,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:01:28,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:01:28,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:01:28,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:01:28,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:01:28,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:01:28,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:01:28,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:01:28,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:01:28,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:01:28,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:01:28,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:01:28,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:01:28,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:01:28,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:01:28,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:01:28,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:01:28,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:01:28,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:01:28,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:01:28,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:01:28,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:01:28,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:01:28,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:01:28,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:01:28,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:01:28,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:01:28,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:01:28,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:01:28,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:01:28,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:01:28,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:01:28,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:01:28,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:01:28,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:01:28,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:01:28,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:01:28,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:01:28,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:01:28,210 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:01:28,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:01:28,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:01:28,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:01:28,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:01:28,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:01:28,213 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:01:28,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:01:28,213 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:01:28,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:01:28,214 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:01:28,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:01:28,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:01:28,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:01:28,214 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:01:28,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:01:28,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:01:28,215 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:01:28,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:01:28,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:01:28,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:01:28,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:01:28,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:01:28,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:01:28,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:01:28,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:01:28,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:01:28,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:01:28,485 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:01:28,486 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:01:28,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2023-03-31 23:01:29,636 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:01:29,828 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:01:29,829 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2023-03-31 23:01:29,835 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87b8a788/10249b6f03b74f7ca70ea05dda2dc074/FLAGb73174feb [2023-03-31 23:01:29,853 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87b8a788/10249b6f03b74f7ca70ea05dda2dc074 [2023-03-31 23:01:29,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:01:29,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:01:29,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:01:29,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:01:29,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:01:29,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:01:29" (1/1) ... [2023-03-31 23:01:29,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237fe0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:29, skipping insertion in model container [2023-03-31 23:01:29,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:01:29" (1/1) ... [2023-03-31 23:01:29,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:01:29,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:01:29,997 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2023-03-31 23:01:30,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:01:30,018 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:01:30,026 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2023-03-31 23:01:30,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:01:30,042 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:01:30,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30 WrapperNode [2023-03-31 23:01:30,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:01:30,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:01:30,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:01:30,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:01:30,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:01:30,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:01:30,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:01:30,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:01:30,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (1/1) ... [2023-03-31 23:01:30,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:01:30,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:01:30,102 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) [2023-03-31 23:01:30,105 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 [2023-03-31 23:01:30,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:01:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:01:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:01:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:01:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:01:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:01:30,135 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:01:30,135 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:01:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:01:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:01:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:01:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:01:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:01:30,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:01:30,197 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:01:30,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:01:30,345 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:01:30,373 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:01:30,374 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 23:01:30,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:01:30 BoogieIcfgContainer [2023-03-31 23:01:30,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:01:30,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:01:30,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:01:30,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:01:30,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:01:29" (1/3) ... [2023-03-31 23:01:30,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604adb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:01:30, skipping insertion in model container [2023-03-31 23:01:30,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:01:30" (2/3) ... [2023-03-31 23:01:30,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604adb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:01:30, skipping insertion in model container [2023-03-31 23:01:30,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:01:30" (3/3) ... [2023-03-31 23:01:30,384 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2023-03-31 23:01:30,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:01:30,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:01:30,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:01:30,456 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a60fd90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:01:30,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:01:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 27 states have internal predecessors, (34), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-03-31 23:01:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:01:30,480 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:01:30,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:01:30,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:01:30,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:01:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash 315828568, now seen corresponding path program 1 times [2023-03-31 23:01:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:01:30,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772820850] [2023-03-31 23:01:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:01:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:01:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:01:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:01:30,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:01:30,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772820850] [2023-03-31 23:01:30,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772820850] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:01:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:01:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:01:30,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016814337] [2023-03-31 23:01:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:01:30,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:01:30,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:01:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:01:30,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:01:30,711 INFO L87 Difference]: Start difference. First operand has 45 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 27 states have internal predecessors, (34), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:01:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:01:30,766 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2023-03-31 23:01:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:01:30,768 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 23:01:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:01:30,778 INFO L225 Difference]: With dead ends: 84 [2023-03-31 23:01:30,778 INFO L226 Difference]: Without dead ends: 41 [2023-03-31 23:01:30,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:01:30,784 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:01:30,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:01:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-03-31 23:01:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-03-31 23:01:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 18 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 23:01:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2023-03-31 23:01:30,842 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 11 [2023-03-31 23:01:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:01:30,843 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2023-03-31 23:01:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:01:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-03-31 23:01:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-03-31 23:01:30,846 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:01:30,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:01:30,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:01:30,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:01:30,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:01:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1656042867, now seen corresponding path program 1 times [2023-03-31 23:01:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:01:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223606047] [2023-03-31 23:01:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:01:30,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:01:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:01:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:01:31,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:01:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223606047] [2023-03-31 23:01:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223606047] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:01:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:01:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:01:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178207761] [2023-03-31 23:01:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:01:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:01:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:01:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:01:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:01:31,074 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:01:31,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:01:31,247 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-03-31 23:01:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:01:31,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-03-31 23:01:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:01:31,249 INFO L225 Difference]: With dead ends: 47 [2023-03-31 23:01:31,249 INFO L226 Difference]: Without dead ends: 45 [2023-03-31 23:01:31,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:01:31,251 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:01:31,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 84 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:01:31,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-03-31 23:01:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-03-31 23:01:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 27 states have internal predecessors, (31), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-03-31 23:01:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2023-03-31 23:01:31,273 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 12 [2023-03-31 23:01:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:01:31,273 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2023-03-31 23:01:31,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:01:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2023-03-31 23:01:31,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 23:01:31,274 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:01:31,274 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:01:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:01:31,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:01:31,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:01:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1402373502, now seen corresponding path program 1 times [2023-03-31 23:01:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:01:31,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705321945] [2023-03-31 23:01:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:01:31,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:01:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:01:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:01:31,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:01:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705321945] [2023-03-31 23:01:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705321945] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:01:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:01:31,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:01:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667193750] [2023-03-31 23:01:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:01:31,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:01:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:01:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:01:31,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:01:31,482 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 23:01:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:01:31,605 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2023-03-31 23:01:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:01:31,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-03-31 23:01:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:01:31,610 INFO L225 Difference]: With dead ends: 60 [2023-03-31 23:01:31,610 INFO L226 Difference]: Without dead ends: 52 [2023-03-31 23:01:31,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:01:31,617 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:01:31,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 151 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:01:31,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-03-31 23:01:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-03-31 23:01:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-03-31 23:01:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2023-03-31 23:01:31,633 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 17 [2023-03-31 23:01:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:01:31,634 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2023-03-31 23:01:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 23:01:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2023-03-31 23:01:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-31 23:01:31,635 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:01:31,635 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:01:31,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:01:31,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:01:31,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:01:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1338305055, now seen corresponding path program 1 times [2023-03-31 23:01:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:01:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157885569] [2023-03-31 23:01:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:01:31,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:01:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:01:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-03-31 23:01:31,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:01:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157885569] [2023-03-31 23:01:31,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157885569] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:01:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989807064] [2023-03-31 23:01:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:01:31,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:01:31,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:01:31,929 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) [2023-03-31 23:01:31,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:01:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:01:32,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2023-03-31 23:01:32,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:01:32,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 23:01:32,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:01:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 23:01:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989807064] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:01:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312428828] [2023-03-31 23:01:32,411 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-03-31 23:01:32,411 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:01:32,415 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:01:32,419 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:01:32,420 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:01:32,479 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 8 for LOIs [2023-03-31 23:01:32,722 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-03-31 23:01:32,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-03-31 23:01:32,738 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:01:33,148 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '765#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2023-03-31 23:01:33,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:01:33,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:01:33,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2023-03-31 23:01:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984171028] [2023-03-31 23:01:33,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:01:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-03-31 23:01:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:01:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-03-31 23:01:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2023-03-31 23:01:33,151 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-03-31 23:01:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:01:33,408 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2023-03-31 23:01:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 23:01:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32 [2023-03-31 23:01:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:01:33,409 INFO L225 Difference]: With dead ends: 78 [2023-03-31 23:01:33,409 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:01:33,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2023-03-31 23:01:33,411 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 63 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:01:33,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 106 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:01:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:01:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:01:33,412 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) [2023-03-31 23:01:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:01:33,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2023-03-31 23:01:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:01:33,412 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:01:33,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 13 states have internal predecessors, (31), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-03-31 23:01:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:01:33,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:01:33,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:01:33,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:01:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:01:33,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:01:33,784 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-03-31 23:01:33,784 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-03-31 23:01:33,785 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-03-31 23:01:33,785 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-03-31 23:01:33,785 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,785 INFO L895 garLoopResultBuilder]: At program point L60-1(line 60) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,785 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 77) no Hoare annotation was computed. [2023-03-31 23:01:33,785 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,785 INFO L895 garLoopResultBuilder]: At program point L56-1(line 56) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L48-2(lines 48 72) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L48-3(lines 48 72) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L73(line 73) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 44) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 44) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,786 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-03-31 23:01:33,786 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 53) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,787 INFO L902 garLoopResultBuilder]: At program point L74(lines 25 77) the Hoare annotation is: true [2023-03-31 23:01:33,787 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,787 INFO L895 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,787 INFO L899 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 68) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 37) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 68) no Hoare annotation was computed. [2023-03-31 23:01:33,787 INFO L895 garLoopResultBuilder]: At program point L54-1(lines 54 68) the Hoare annotation is: (and (< main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,788 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,788 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,788 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-03-31 23:01:33,788 INFO L899 garLoopResultBuilder]: For program point L42(line 42) no Hoare annotation was computed. [2023-03-31 23:01:33,788 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 77) the Hoare annotation is: true [2023-03-31 23:01:33,788 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2023-03-31 23:01:33,788 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,788 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (<= main_~t~0 main_~tagbuf_len~0) (<= 0 main_~t~0)) [2023-03-31 23:01:33,788 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 63) no Hoare annotation was computed. [2023-03-31 23:01:33,788 INFO L899 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-03-31 23:01:33,789 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-03-31 23:01:33,790 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-03-31 23:01:33,792 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 23:01:33,794 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:01:33,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:01:33 BoogieIcfgContainer [2023-03-31 23:01:33,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:01:33,806 INFO L158 Benchmark]: Toolchain (without parser) took 3949.12ms. Allocated memory is still 281.0MB. Free memory was 232.3MB in the beginning and 231.0MB in the end (delta: 1.3MB). Peak memory consumption was 3.4MB. Max. memory is 8.0GB. [2023-03-31 23:01:33,807 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:01:33,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.01ms. Allocated memory is still 281.0MB. Free memory was 232.3MB in the beginning and 221.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:01:33,807 INFO L158 Benchmark]: Boogie Preprocessor took 27.30ms. Allocated memory is still 281.0MB. Free memory was 221.3MB in the beginning and 219.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 23:01:33,807 INFO L158 Benchmark]: RCFGBuilder took 305.22ms. Allocated memory is still 281.0MB. Free memory was 219.7MB in the beginning and 205.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 23:01:33,807 INFO L158 Benchmark]: TraceAbstraction took 3427.70ms. Allocated memory is still 281.0MB. Free memory was 204.5MB in the beginning and 231.0MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:01:33,809 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 195.0MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.01ms. Allocated memory is still 281.0MB. Free memory was 232.3MB in the beginning and 221.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.30ms. Allocated memory is still 281.0MB. Free memory was 221.3MB in the beginning and 219.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 305.22ms. Allocated memory is still 281.0MB. Free memory was 219.7MB in the beginning and 205.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 3427.70ms. Allocated memory is still 281.0MB. Free memory was 204.5MB in the beginning and 231.0MB in the end (delta: -26.5MB). There was no memory consumed. 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: 19]: 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 6 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 405 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 180 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 76 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 69 PreInvPairs, 105 NumberOfFragments, 132 HoareAnnotationTreeSize, 69 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 24 FomulaSimplificationsInter, 197 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 385 SizeOfPredicates, 3 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 44/65 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: 32]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: t <= tagbuf_len && 0 <= t RESULT: Ultimate proved your program to be correct! [2023-03-31 23:01:33,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...