/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:26:07,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:26:07,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:26:07,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:26:07,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:26:07,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:26:07,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:26:07,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:26:07,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:26:07,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:26:07,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:26:07,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:26:07,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:26:07,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:26:07,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:26:07,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:26:07,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:26:07,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:26:07,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:26:07,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:26:07,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:26:07,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:26:07,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:26:07,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:26:07,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 01:26:07,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 01:26:07,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 01:26:07,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 01:26:07,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 01:26:07,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 01:26:07,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:26:07,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:26:07,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:26:07,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:26:07,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:26:07,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:26:07,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:26:07,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:26:07,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:26:07,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:26:07,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:26:07,211 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 [2023-04-02 01:26:07,238 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:26:07,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:26:07,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:26:07,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:26:07,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:26:07,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:26:07,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:26:07,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:26:07,240 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:26:07,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:26:07,241 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:26:07,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:26:07,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:26:07,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:26:07,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:26:07,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:26:07,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:26:07,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:26:07,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:26:07,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:26:07,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:26:07,244 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:26:07,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:26:07,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:26:07,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:26:07,488 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:26:07,490 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:26:07,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2023-04-02 01:26:08,641 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:26:08,786 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:26:08,786 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2023-04-02 01:26:08,790 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04673bc9b/5bd5f532234e490dade6a0322420ffde/FLAG05b0da564 [2023-04-02 01:26:09,222 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04673bc9b/5bd5f532234e490dade6a0322420ffde [2023-04-02 01:26:09,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:26:09,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:26:09,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:26:09,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:26:09,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:26:09,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8d8e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09, skipping insertion in model container [2023-04-02 01:26:09,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:26:09,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:26:09,346 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/MADWiFi-encode_ie_ok.i[893,906] [2023-04-02 01:26:09,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:26:09,363 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:26:09,371 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/MADWiFi-encode_ie_ok.i[893,906] [2023-04-02 01:26:09,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:26:09,385 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:26:09,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09 WrapperNode [2023-04-02 01:26:09,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:26:09,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:26:09,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:26:09,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:26:09,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,405 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:26:09,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:26:09,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:26:09,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:26:09,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (1/1) ... [2023-04-02 01:26:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:26:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:26:09,458 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) [2023-04-02 01:26:09,460 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 [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 01:26:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:26:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:26:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:26:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:26:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:26:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:26:09,578 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:26:09,580 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:26:09,774 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:26:09,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:26:09,780 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 01:26:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:26:09 BoogieIcfgContainer [2023-04-02 01:26:09,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:26:09,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:26:09,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:26:09,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:26:09,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:26:09" (1/3) ... [2023-04-02 01:26:09,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abb928c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:26:09, skipping insertion in model container [2023-04-02 01:26:09,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:26:09" (2/3) ... [2023-04-02 01:26:09,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abb928c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:26:09, skipping insertion in model container [2023-04-02 01:26:09,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:26:09" (3/3) ... [2023-04-02 01:26:09,793 INFO L112 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2023-04-02 01:26:09,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:26:09,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:26:09,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:26:09,857 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=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62f2237e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:26:09,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:26:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 01:26:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 01:26:09,865 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:26:09,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:26:09,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:26:09,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:26:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1180455853, now seen corresponding path program 1 times [2023-04-02 01:26:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:26:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237102134] [2023-04-02 01:26:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:26:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:26:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:26:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:26:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:26:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237102134] [2023-04-02 01:26:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237102134] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:26:10,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:26:10,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:26:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118269872] [2023-04-02 01:26:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:26:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:26:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:26:10,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:26:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:26:10,236 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:26:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:26:10,450 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2023-04-02 01:26:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:26:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 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 19 [2023-04-02 01:26:10,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:26:10,456 INFO L225 Difference]: With dead ends: 52 [2023-04-02 01:26:10,456 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 01:26:10,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:26:10,465 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:26:10,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 35 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:26:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 01:26:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-02 01:26:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:26:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2023-04-02 01:26:10,487 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2023-04-02 01:26:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:26:10,488 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2023-04-02 01:26:10,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 01:26:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2023-04-02 01:26:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:26:10,489 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:26:10,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:26:10,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:26:10,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:26:10,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:26:10,490 INFO L85 PathProgramCache]: Analyzing trace with hash -107986180, now seen corresponding path program 1 times [2023-04-02 01:26:10,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:26:10,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744772786] [2023-04-02 01:26:10,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:26:10,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:26:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:26:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:26:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:26:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:26:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744772786] [2023-04-02 01:26:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744772786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:26:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:26:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:26:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358630494] [2023-04-02 01:26:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:26:10,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:26:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:26:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:26:10,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:26:10,653 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:26:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:26:10,768 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-04-02 01:26:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:26:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 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 24 [2023-04-02 01:26:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:26:10,771 INFO L225 Difference]: With dead ends: 39 [2023-04-02 01:26:10,771 INFO L226 Difference]: Without dead ends: 37 [2023-04-02 01:26:10,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:26:10,777 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:26:10,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 27 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:26:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-04-02 01:26:10,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2023-04-02 01:26:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.04) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 01:26:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-04-02 01:26:10,799 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2023-04-02 01:26:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:26:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-04-02 01:26:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:26:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-04-02 01:26:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 01:26:10,802 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:26:10,803 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:26:10,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:26:10,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:26:10,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:26:10,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1340590469, now seen corresponding path program 1 times [2023-04-02 01:26:10,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:26:10,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470572683] [2023-04-02 01:26:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:26:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:26:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:26:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:26:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:26:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:26:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:26:11,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:26:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470572683] [2023-04-02 01:26:11,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470572683] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:26:11,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524521345] [2023-04-02 01:26:11,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:26:11,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:26:11,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:26:11,010 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) [2023-04-02 01:26:11,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:26:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:11,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 01:26:11,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:26:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:26:11,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:26:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 01:26:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524521345] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:26:11,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:26:11,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2023-04-02 01:26:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551741258] [2023-04-02 01:26:11,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:26:11,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 01:26:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:26:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 01:26:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:26:11,363 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 01:26:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:26:11,621 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-04-02 01:26:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 01:26:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 37 [2023-04-02 01:26:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:26:11,622 INFO L225 Difference]: With dead ends: 53 [2023-04-02 01:26:11,622 INFO L226 Difference]: Without dead ends: 51 [2023-04-02 01:26:11,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2023-04-02 01:26:11,623 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:26:11,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 47 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:26:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-02 01:26:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-04-02 01:26:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 01:26:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-04-02 01:26:11,631 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 37 [2023-04-02 01:26:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:26:11,631 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-04-02 01:26:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 5 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-04-02 01:26:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-04-02 01:26:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-02 01:26:11,632 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:26:11,632 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:26:11,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:26:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:26:11,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:26:11,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:26:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash 239053851, now seen corresponding path program 2 times [2023-04-02 01:26:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:26:11,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606174366] [2023-04-02 01:26:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:26:11,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:26:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:26:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:26:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:26:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 01:26:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:26:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 01:26:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 01:26:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 01:26:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:26:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-02 01:26:12,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:26:12,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606174366] [2023-04-02 01:26:12,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606174366] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:26:12,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95383784] [2023-04-02 01:26:12,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:26:12,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:26:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:26:12,094 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) [2023-04-02 01:26:12,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:26:12,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:26:12,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:26:12,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 01:26:12,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:26:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:26:12,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:26:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 01:26:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95383784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:26:12,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:26:12,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2023-04-02 01:26:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790117997] [2023-04-02 01:26:12,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:26:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 01:26:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:26:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 01:26:12,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-04-02 01:26:12,579 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-04-02 01:26:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:26:12,991 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2023-04-02 01:26:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 01:26:12,992 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 63 [2023-04-02 01:26:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:26:12,993 INFO L225 Difference]: With dead ends: 56 [2023-04-02 01:26:12,993 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 01:26:12,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 01:26:12,994 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:26:12,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 72 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:26:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 01:26:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 01:26:12,995 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) [2023-04-02 01:26:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 01:26:12,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2023-04-02 01:26:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:26:12,995 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 01:26:12,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 25 states have internal predecessors, (50), 10 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2023-04-02 01:26:12,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 01:26:12,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 01:26:12,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 01:26:13,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 01:26:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-02 01:26:13,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 24 56) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L40(lines 25 56) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed. [2023-04-02 01:26:13,277 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2023-04-02 01:26:13,278 INFO L895 garLoopResultBuilder]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= 1 main_~leader_len~0)) [2023-04-02 01:26:13,278 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-04-02 01:26:13,278 INFO L902 garLoopResultBuilder]: At program point L54(lines 24 56) the Hoare annotation is: true [2023-04-02 01:26:13,278 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2023-04-02 01:26:13,278 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* main_~i~0 2))) (<= 1 main_~p~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2023-04-02 01:26:13,278 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 24 56) the Hoare annotation is: true [2023-04-02 01:26:13,278 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-04-02 01:26:13,278 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2023-04-02 01:26:13,278 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-04-02 01:26:13,278 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point L39(lines 25 56) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 22) the Hoare annotation is: true [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-04-02 01:26:13,279 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-04-02 01:26:13,280 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-04-02 01:26:13,282 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-04-02 01:26:13,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 01:26:13,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 01:26:13 BoogieIcfgContainer [2023-04-02 01:26:13,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 01:26:13,292 INFO L158 Benchmark]: Toolchain (without parser) took 4067.41ms. Allocated memory is still 294.6MB. Free memory was 258.4MB in the beginning and 168.8MB in the end (delta: 89.5MB). Peak memory consumption was 91.1MB. Max. memory is 8.0GB. [2023-04-02 01:26:13,292 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 173.0MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:26:13,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.40ms. Allocated memory is still 294.6MB. Free memory was 258.4MB in the beginning and 247.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 01:26:13,293 INFO L158 Benchmark]: Boogie Preprocessor took 20.45ms. Allocated memory is still 294.6MB. Free memory was 247.9MB in the beginning and 246.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 01:26:13,293 INFO L158 Benchmark]: RCFGBuilder took 374.40ms. Allocated memory is still 294.6MB. Free memory was 246.3MB in the beginning and 234.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-02 01:26:13,293 INFO L158 Benchmark]: TraceAbstraction took 3508.69ms. Allocated memory is still 294.6MB. Free memory was 233.2MB in the beginning and 168.8MB in the end (delta: 64.4MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2023-04-02 01:26:13,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 173.0MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 160.40ms. Allocated memory is still 294.6MB. Free memory was 258.4MB in the beginning and 247.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.45ms. Allocated memory is still 294.6MB. Free memory was 247.9MB in the beginning and 246.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 374.40ms. Allocated memory is still 294.6MB. Free memory was 246.3MB in the beginning and 234.2MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3508.69ms. Allocated memory is still 294.6MB. Free memory was 233.2MB in the beginning and 168.8MB in the end (delta: 64.4MB). Peak memory consumption was 65.9MB. 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1002 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 23 mSDtfsCounter, 1002 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 38 NumberOfFragments, 76 HoareAnnotationTreeSize, 20 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 335 ConstructedInterpolants, 0 QuantifiedInterpolants, 1201 SizeOfPredicates, 12 NumberOfNonLiveVariables, 254 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 357/431 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + i * 2 && 1 <= p) && 1 <= leader_len RESULT: Ultimate proved your program to be correct! [2023-04-02 01:26:13,325 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...