/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:39:57,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:39:57,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:39:57,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:39:57,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:39:57,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:39:57,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:39:57,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:39:57,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:39:57,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:39:57,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:39:57,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:39:57,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:39:57,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:39:57,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:39:57,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:39:57,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:39:57,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:39:57,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:39:57,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:39:57,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:39:57,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:39:57,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:39:57,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:39:57,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:39:57,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:39:57,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:39:57,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:39:57,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:39:57,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:39:57,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:39:57,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:39:57,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:39:57,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:39:57,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:39:57,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:39:57,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:39:57,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:39:57,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:39:57,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:39:57,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:39:57,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:39:57,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:39:57,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:39:57,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:39:57,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:39:57,206 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:39:57,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:39:57,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:39:57,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:39:57,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:39:57,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:39:57,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:39:57,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:39:57,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:39:57,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:39:57,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:39:57,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:39:57,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:39:57,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:39:57,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:39:57,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:39:57,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:39:57,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:57,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:39:57,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:39:57,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:39:57,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:39:57,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:39:57,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:39:57,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:39:57,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:39:57,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:39:57,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:39:57,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:39:57,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:39:57,746 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:39:57,747 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-25 06:39:57,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de248a6f6/f9ada6b4c39f4f1f94d6ab242a4af6ca/FLAGf7ac85426 [2020-09-25 06:39:58,395 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:39:58,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-25 06:39:58,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de248a6f6/f9ada6b4c39f4f1f94d6ab242a4af6ca/FLAGf7ac85426 [2020-09-25 06:39:58,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de248a6f6/f9ada6b4c39f4f1f94d6ab242a4af6ca [2020-09-25 06:39:58,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:39:58,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:39:58,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:58,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:39:58,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:39:58,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:58" (1/1) ... [2020-09-25 06:39:58,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:58, skipping insertion in model container [2020-09-25 06:39:58,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:39:58" (1/1) ... [2020-09-25 06:39:58,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:39:58,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:39:59,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:59,119 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:39:59,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:39:59,174 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:39:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59 WrapperNode [2020-09-25 06:39:59,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:39:59,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:39:59,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:39:59,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:39:59,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... [2020-09-25 06:39:59,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:39:59,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:39:59,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:39:59,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:39:59,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:39:59,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:39:59,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:39:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 06:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-09-25 06:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-09-25 06:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:39:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 06:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 06:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:39:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:39:59,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:39:59,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:39:59,843 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:39:59,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:59 BoogieIcfgContainer [2020-09-25 06:39:59,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:39:59,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:39:59,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:39:59,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:39:59,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:39:58" (1/3) ... [2020-09-25 06:39:59,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1559e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:59, skipping insertion in model container [2020-09-25 06:39:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:39:59" (2/3) ... [2020-09-25 06:39:59,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1559e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:39:59, skipping insertion in model container [2020-09-25 06:39:59,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:39:59" (3/3) ... [2020-09-25 06:39:59,859 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2020-09-25 06:39:59,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:39:59,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:39:59,903 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:39:59,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:39:59,934 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:39:59,934 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:39:59,934 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:39:59,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:39:59,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:39:59,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:39:59,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:39:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:39:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 06:39:59,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:39:59,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:39:59,965 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:39:59,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:39:59,972 INFO L82 PathProgramCache]: Analyzing trace with hash -923536628, now seen corresponding path program 1 times [2020-09-25 06:39:59,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:39:59,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673257121] [2020-09-25 06:39:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:40:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:01,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:01,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:40:01,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-09-25 06:40:01,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:01,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:40:01,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:40:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:40:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:40:02,655 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 31 [2020-09-25 06:40:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:40:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:40:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:40:02,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:40:02,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:40:02,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:40:02,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:40:02,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:40:02,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:40:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:40:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:40:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:40:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:40:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:40:02,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673257121] [2020-09-25 06:40:02,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:40:02,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 06:40:02,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216363864] [2020-09-25 06:40:02,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 06:40:02,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:40:02,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 06:40:02,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:40:02,962 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 17 states. [2020-09-25 06:40:03,646 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-09-25 06:40:03,853 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-09-25 06:40:04,072 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-09-25 06:40:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:40:05,095 INFO L93 Difference]: Finished difference Result 61 states and 60 transitions. [2020-09-25 06:40:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 06:40:05,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-09-25 06:40:05,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:40:05,106 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:40:05,106 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:40:05,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 06:40:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:40:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:40:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:40:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:40:05,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-09-25 06:40:05,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:40:05,141 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:40:05,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 06:40:05,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:40:05,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:40:05,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:40:05,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:40:05,299 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,299 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,299 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,300 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 06:40:05,300 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,300 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,300 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 06:40:05,300 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 06:40:05,300 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 06:40:05,301 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 06:40:05,301 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 06:40:05,301 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 06:40:05,301 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 06:40:05,301 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L33-3(line 33) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L33-4(line 33) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 06:40:05,302 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-09-25 06:40:05,303 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,304 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,304 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,304 INFO L264 CegarLoopResult]: At program point L34-3(line 34) the Hoare annotation is: (let ((.cse7 (+ main_~ptr~0.offset 4))) (let ((.cse6 (+ |main_~#good~0.offset| 4)) (.cse9 (select (select |#memory_$Pointer$.base| main_~ptr~0.base) .cse7))) (let ((.cse4 (select |#memory_$Pointer$.offset| .cse9)) (.cse5 (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) .cse7)) (.cse1 (+ |main_~#inner~0.offset| 4)) (.cse8 (select (select |#memory_$Pointer$.base| |main_~#good~0.base|) .cse6)) (.cse2 (select |#memory_$Pointer$.base| .cse9))) (and (<= |main_~#good~0.offset| 0) (= (let ((.cse0 (+ |main_#t~mem2.offset| 4))) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |main_#t~mem2.base|) .cse0)) (select (select |#memory_$Pointer$.offset| |main_#t~mem2.base|) .cse0))) 4) (= (select (select |#memory_$Pointer$.offset| |main_~#inner~0.base|) .cse1) 0) (= (let ((.cse3 (+ .cse5 4))) (select (select |#memory_int| (select .cse2 .cse3)) (select .cse4 .cse3))) 4) (= (select (select |#memory_$Pointer$.offset| |main_~#good~0.base|) .cse6) 0) (= |main_~#inner~0.offset| 0) (= main_~ptr~0.offset 0) (not (= .cse7 (select .cse4 4))) (= 4 (select (select |#memory_int| |main_#t~mem3.base|) |main_#t~mem3.offset|)) (= .cse5 0) (not (= (select (select |#memory_$Pointer$.base| .cse8) 4) .cse8)) (= |main_#t~mem4| 4) (= 0 |main_~#im~0.offset|) (not (= (select (select |#memory_$Pointer$.base| |main_~#inner~0.base|) .cse1) |main_~#inner~0.base|)) (= (select (select |#memory_$Pointer$.offset| .cse8) 4) 0) (<= 0 |main_~#good~0.offset|) (= (select |#valid| |main_~#im~0.base|) 1) (not (= |main_~#im~0.base| |main_~#inner~0.base|)) (not (= (select .cse2 .cse7) .cse9)))))) [2020-09-25 06:40:05,305 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 06:40:05,305 INFO L268 CegarLoopResult]: For program point L34-4(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,305 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 06:40:05,305 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 06:40:05,305 INFO L268 CegarLoopResult]: For program point L34-5(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,305 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 06:40:05,306 INFO L268 CegarLoopResult]: For program point L34-6(line 34) no Hoare annotation was computed. [2020-09-25 06:40:05,306 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-25 06:40:05,306 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 06:40:05,306 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 06:40:05,306 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-09-25 06:40:05,307 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-09-25 06:40:05,307 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-09-25 06:40:05,307 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 06:40:05,307 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-25 06:40:05,307 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-09-25 06:40:05,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:40:05 BoogieIcfgContainer [2020-09-25 06:40:05,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:40:05,319 INFO L168 Benchmark]: Toolchain (without parser) took 6564.36 ms. Allocated memory was 142.1 MB in the beginning and 267.4 MB in the end (delta: 125.3 MB). Free memory was 105.3 MB in the beginning and 212.9 MB in the end (delta: -107.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:05,320 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:40:05,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.88 ms. Allocated memory is still 142.1 MB. Free memory was 104.6 MB in the beginning and 93.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:05,322 INFO L168 Benchmark]: Boogie Preprocessor took 208.97 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 183.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:05,323 INFO L168 Benchmark]: RCFGBuilder took 460.63 ms. Allocated memory is still 205.5 MB. Free memory was 183.3 MB in the beginning and 165.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:05,324 INFO L168 Benchmark]: TraceAbstraction took 5466.40 ms. Allocated memory was 205.5 MB in the beginning and 267.4 MB in the end (delta: 61.9 MB). Free memory was 164.8 MB in the beginning and 212.9 MB in the end (delta: -48.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:40:05,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.88 ms. Allocated memory is still 142.1 MB. Free memory was 104.6 MB in the beginning and 93.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 208.97 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 183.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.63 ms. Allocated memory is still 205.5 MB. Free memory was 183.3 MB in the beginning and 165.4 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5466.40 ms. Allocated memory was 205.5 MB in the beginning and 267.4 MB in the end (delta: 61.9 MB). Free memory was 164.8 MB in the beginning and 212.9 MB in the end (delta: -48.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 124 SDslu, 177 SDs, 0 SdLazy, 258 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 221 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 14310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...