/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:20:49,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:20:49,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:20:49,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:20:49,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:20:49,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:20:49,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:20:49,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:20:49,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:20:49,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:20:49,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:20:49,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:20:49,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:20:49,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:20:49,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:20:49,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:20:49,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:20:49,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:20:49,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:20:49,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:20:49,437 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 [2021-05-02 12:20:49,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:20:49,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:20:49,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:20:49,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:20:49,469 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:20:49,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:20:49,469 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:20:49,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:20:49,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:20:49,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:20:49,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:20:49,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:20:49,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:20:49,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:20:49,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:20:49,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:20:49,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:20:49,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:20:49,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:20:49,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:20:49,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:20:49,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:20:49,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:20:49,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:20:49,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:20:49,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:20:49,714 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:20:49,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2021-05-02 12:20:49,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f732475d1/87debdb866f74c4a977751816abad132/FLAGfe3669c38 [2021-05-02 12:20:50,132 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:20:50,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2021-05-02 12:20:50,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f732475d1/87debdb866f74c4a977751816abad132/FLAGfe3669c38 [2021-05-02 12:20:50,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f732475d1/87debdb866f74c4a977751816abad132 [2021-05-02 12:20:50,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:20:50,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:20:50,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:20:50,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:20:50,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:20:50,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0c6a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50, skipping insertion in model container [2021-05-02 12:20:50,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:20:50,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:20:50,660 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-05-02 12:20:50,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:20:50,675 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:20:50,683 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i[893,906] [2021-05-02 12:20:50,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:20:50,698 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:20:50,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50 WrapperNode [2021-05-02 12:20:50,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:20:50,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:20:50,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:20:50,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:20:50,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... [2021-05-02 12:20:50,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:20:50,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:20:50,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:20:50,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:20:50,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:20:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:20:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:20:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:20:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:20:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:20:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:20:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:20:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:20:50,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:20:50,986 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 12:20:50,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:20:50 BoogieIcfgContainer [2021-05-02 12:20:50,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:20:50,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:20:50,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:20:50,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:20:50,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:20:50" (1/3) ... [2021-05-02 12:20:50,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8e9915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:20:50, skipping insertion in model container [2021-05-02 12:20:50,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:20:50" (2/3) ... [2021-05-02 12:20:50,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8e9915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:20:50, skipping insertion in model container [2021-05-02 12:20:50,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:20:50" (3/3) ... [2021-05-02 12:20:50,992 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2021-05-02 12:20:50,995 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:20:50,997 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:20:51,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:20:51,021 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:20:51,022 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:20:51,022 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:20:51,022 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:20:51,022 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:20:51,022 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:20:51,022 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:20:51,022 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:20:51,032 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) [2021-05-02 12:20:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 12:20:51,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:20:51,035 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:20:51,036 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:20:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:20:51,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1180455853, now seen corresponding path program 1 times [2021-05-02 12:20:51,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:20:51,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067440682] [2021-05-02 12:20:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:20:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:20:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:20:51,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:20:51,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067440682] [2021-05-02 12:20:51,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067440682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:20:51,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:20:51,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 12:20:51,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148990574] [2021-05-02 12:20:51,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:20:51,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:20:51,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:20:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:20:51,339 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) [2021-05-02 12:20:51,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:20:51,652 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2021-05-02 12:20:51,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:20:51,653 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 [2021-05-02 12:20:51,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:20:51,657 INFO L225 Difference]: With dead ends: 52 [2021-05-02 12:20:51,657 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 12:20:51,659 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:20:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 12:20:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 12:20:51,685 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) [2021-05-02 12:20:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-05-02 12:20:51,686 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2021-05-02 12:20:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:20:51,687 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-05-02 12:20:51,687 INFO L481 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) [2021-05-02 12:20:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-05-02 12:20:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 12:20:51,687 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:20:51,688 INFO L523 BasicCegarLoop]: 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] [2021-05-02 12:20:51,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:20:51,688 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:20:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:20:51,689 INFO L82 PathProgramCache]: Analyzing trace with hash -107986180, now seen corresponding path program 1 times [2021-05-02 12:20:51,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:20:51,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624700161] [2021-05-02 12:20:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:20:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:51,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:20:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 12:20:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:20:51,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:20:51,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624700161] [2021-05-02 12:20:51,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624700161] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:20:51,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:20:51,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 12:20:51,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283177298] [2021-05-02 12:20:51,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:20:51,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:20:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:20:51,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:20:51,867 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) [2021-05-02 12:20:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:20:52,131 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-05-02 12:20:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:20:52,131 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 [2021-05-02 12:20:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:20:52,133 INFO L225 Difference]: With dead ends: 39 [2021-05-02 12:20:52,133 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 12:20:52,135 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:20:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 12:20:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-02 12:20:52,151 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) [2021-05-02 12:20:52,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-05-02 12:20:52,152 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 24 [2021-05-02 12:20:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:20:52,152 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-05-02 12:20:52,152 INFO L481 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) [2021-05-02 12:20:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-05-02 12:20:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 12:20:52,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:20:52,184 INFO L523 BasicCegarLoop]: 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] [2021-05-02 12:20:52,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:20:52,185 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:20:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:20:52,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1340590469, now seen corresponding path program 1 times [2021-05-02 12:20:52,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:20:52,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477812459] [2021-05-02 12:20:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:20:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:20:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 12:20:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 12:20:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 12:20:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 12:20:52,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:20:52,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477812459] [2021-05-02 12:20:52,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477812459] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:20:52,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802723400] [2021-05-02 12:20:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:20:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:52,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:20:52,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:20:52,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 12:20:52,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802723400] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:20:52,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:20:52,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-05-02 12:20:52,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13932317] [2021-05-02 12:20:52,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:20:52,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:20:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:20:52,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:20:52,774 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 12:20:53,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:20:53,102 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-05-02 12:20:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:20:53,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2021-05-02 12:20:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:20:53,105 INFO L225 Difference]: With dead ends: 48 [2021-05-02 12:20:53,105 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 12:20:53,106 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 326.9ms TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:20:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 12:20:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-02 12:20:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 12:20:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-05-02 12:20:53,122 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 37 [2021-05-02 12:20:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:20:53,122 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-05-02 12:20:53,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-05-02 12:20:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-05-02 12:20:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 12:20:53,126 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:20:53,127 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:20:53,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:20:53,347 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:20:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:20:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1604703908, now seen corresponding path program 2 times [2021-05-02 12:20:53,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:20:53,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218845684] [2021-05-02 12:20:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:20:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:20:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-05-02 12:20:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-02 12:20:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 12:20:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 12:20:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-05-02 12:20:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:20:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-05-02 12:20:53,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:20:53,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218845684] [2021-05-02 12:20:53,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218845684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:20:53,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668535458] [2021-05-02 12:20:53,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:20:53,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:20:53,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:20:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:20:53,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:20:53,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:53,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:20:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 12:20:54,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668535458] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:20:54,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:20:54,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-05-02 12:20:54,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672913116] [2021-05-02 12:20:54,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:20:54,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:20:54,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:20:54,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:20:54,181 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 6 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-05-02 12:20:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:20:54,736 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-05-02 12:20:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 12:20:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 6 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 50 [2021-05-02 12:20:54,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:20:54,737 INFO L225 Difference]: With dead ends: 51 [2021-05-02 12:20:54,737 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:20:54,737 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 496.8ms TimeCoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:20:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:20:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:20:54,738 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) [2021-05-02 12:20:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:20:54,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-05-02 12:20:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:20:54,738 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:20:54,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 6 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-05-02 12:20:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:20:54,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:20:54,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:20:54,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:20:55,147 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-02 12:20:55,147 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-02 12:20:55,147 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-02 12:20:55,147 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:20:55,148 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 24 56) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point L40(lines 25 56) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point L36(line 36) no Hoare annotation was computed. [2021-05-02 12:20:55,148 INFO L198 CegarLoopUtils]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L194 CegarLoopUtils]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L37(line 37) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L201 CegarLoopUtils]: At program point L54(lines 24 56) the Hoare annotation is: true [2021-05-02 12:20:55,149 INFO L194 CegarLoopUtils]: At program point L50(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2021-05-02 12:20:55,149 INFO L194 CegarLoopUtils]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L38(line 38) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L51(line 51) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L39(lines 25 56) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:20:55,149 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-02 12:20:55,149 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-05-02 12:20:55,150 INFO L198 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-05-02 12:20:55,150 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-05-02 12:20:55,150 INFO L198 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-05-02 12:20:55,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:20:55 BoogieIcfgContainer [2021-05-02 12:20:55,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:20:55,169 INFO L168 Benchmark]: Toolchain (without parser) took 4612.45 ms. Allocated memory was 227.5 MB in the beginning and 273.7 MB in the end (delta: 46.1 MB). Free memory was 192.7 MB in the beginning and 161.9 MB in the end (delta: 30.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 227.5 MB. Free memory is still 209.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.50 ms. Allocated memory is still 227.5 MB. Free memory was 192.5 MB in the beginning and 182.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 227.5 MB. Free memory was 182.6 MB in the beginning and 211.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L168 Benchmark]: RCFGBuilder took 255.40 ms. Allocated memory is still 227.5 MB. Free memory was 210.7 MB in the beginning and 193.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L168 Benchmark]: TraceAbstraction took 4181.29 ms. Allocated memory was 227.5 MB in the beginning and 273.7 MB in the end (delta: 46.1 MB). Free memory was 193.9 MB in the beginning and 161.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:20:55,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 227.5 MB. Free memory is still 209.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 139.50 ms. Allocated memory is still 227.5 MB. Free memory was 192.5 MB in the beginning and 182.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 227.5 MB. Free memory was 182.6 MB in the beginning and 211.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 255.40 ms. Allocated memory is still 227.5 MB. Free memory was 210.7 MB in the beginning and 193.9 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4181.29 ms. Allocated memory was 227.5 MB in the beginning and 273.7 MB in the end (delta: 46.1 MB). Free memory was 193.9 MB in the beginning and 161.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: SAFE, OverallTime: 3933.1ms, OverallIterations: 4, TraceHistogramMax: 6, EmptinessCheckTime: 9.8ms, AutomataDifference: 1489.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 193.6ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 139 SDslu, 223 SDs, 0 SdLazy, 745 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 490.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1172.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 33 NumberOfFragments, 94 HoareAnnotationTreeSize, 18 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 59.1ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 665 FormulaSimplificationTreeSizeReductionInter, 127.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 55.3ms SsaConstructionTime, 146.7ms SatisfiabilityAnalysisTime, 1494.8ms InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 778 SizeOfPredicates, 10 NumberOfNonLiveVariables, 286 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 139/166 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: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i RESULT: Ultimate proved your program to be correct! Received shutdown request...