/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=0.4 --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 05:31:14,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:31:14,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:31:14,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:31:14,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:31:14,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:31:14,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:31:14,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:31:14,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:31:14,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:31:14,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:31:14,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:31:14,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:31:14,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:31:14,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:31:14,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:31:14,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:31:14,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:31:14,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:31:14,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:31:14,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:31:14,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:31:14,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:31:14,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:31:14,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:31:14,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:31:14,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:31:14,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:31:14,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:31:14,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:31:14,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:31:14,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:31:14,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:31:14,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:31:14,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:31:14,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:31:14,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:31:14,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:31:14,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:31:14,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:31:14,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:31:14,382 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 05:31:14,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:31:14,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:31:14,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:31:14,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:31:14,411 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:31:14,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:31:14,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:31:14,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:31:14,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:31:14,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:31:14,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:31:14,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:31:14,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:31:14,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:31:14,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:31:14,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:31:14,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:31:14,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:31:14,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:31:14,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:31:14,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:31:14,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:14,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:31:14,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:31:14,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:31:14,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:31:14,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:31:14,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:31:14,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:31:14,416 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:31:14,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:31:14,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:31:14,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:31:14,969 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:31:14,970 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:31:14,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-25 05:31:15,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7011fe8a6/0330e9d6e40d4c1ead581e34a7deb90c/FLAGdeb309b64 [2020-09-25 05:31:15,627 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:31:15,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-25 05:31:15,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7011fe8a6/0330e9d6e40d4c1ead581e34a7deb90c/FLAGdeb309b64 [2020-09-25 05:31:15,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7011fe8a6/0330e9d6e40d4c1ead581e34a7deb90c [2020-09-25 05:31:15,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:31:15,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:31:15,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:15,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:31:16,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:31:16,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:15" (1/1) ... [2020-09-25 05:31:16,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16, skipping insertion in model container [2020-09-25 05:31:16,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:15" (1/1) ... [2020-09-25 05:31:16,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:31:16,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:31:16,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:16,337 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:31:16,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:16,373 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:31:16,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16 WrapperNode [2020-09-25 05:31:16,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:16,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:31:16,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:31:16,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:31:16,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (1/1) ... [2020-09-25 05:31:16,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:31:16,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:31:16,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:31:16,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:31:16,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (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 05:31:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:31:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:31:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:31:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:31:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:31:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:31:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 05:31:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-09-25 05:31:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-09-25 05:31:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:31:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:31:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 05:31:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 05:31:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:31:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:31:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:31:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:31:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:31:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:31:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:31:16,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:31:16,866 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:31:16,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:16 BoogieIcfgContainer [2020-09-25 05:31:16,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:31:16,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:31:16,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:31:16,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:31:16,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:15" (1/3) ... [2020-09-25 05:31:16,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706042bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:16, skipping insertion in model container [2020-09-25 05:31:16,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:16" (2/3) ... [2020-09-25 05:31:16,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706042bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:16, skipping insertion in model container [2020-09-25 05:31:16,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:16" (3/3) ... [2020-09-25 05:31:16,883 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2020-09-25 05:31:16,897 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:31:16,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:31:16,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:31:16,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:31:16,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:31:16,973 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:31:16,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:31:16,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:31:16,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:31:16,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:31:16,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:31:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 05:31:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 05:31:17,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:17,012 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 05:31:17,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash -923536628, now seen corresponding path program 1 times [2020-09-25 05:31:17,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:17,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410011971] [2020-09-25 05:31:17,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:18,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:18,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:31:18,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1403 [2020-09-25 05:31:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:18,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:18,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:31:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:31:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:31:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:31:19,546 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 31 [2020-09-25 05:31:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:19,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:19,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:19,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:19,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:31:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:19,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:19,832 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 05:31:19,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410011971] [2020-09-25 05:31:19,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 05:31:19,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853048428] [2020-09-25 05:31:19,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 05:31:19,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 05:31:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:31:19,871 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 17 states. [2020-09-25 05:31:20,605 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-09-25 05:31:20,856 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-09-25 05:31:21,511 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-25 05:31:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:22,181 INFO L93 Difference]: Finished difference Result 61 states and 60 transitions. [2020-09-25 05:31:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 05:31:22,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-09-25 05:31:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:22,193 INFO L225 Difference]: With dead ends: 61 [2020-09-25 05:31:22,193 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:31:22,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 05:31:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:31:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:31:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:31:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:31:22,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-09-25 05:31:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:22,226 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:31:22,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 05:31:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:31:22,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:31:22,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:22,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:31:22,385 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,385 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,385 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,386 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 05:31:22,386 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,386 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,386 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:31:22,386 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 05:31:22,387 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 05:31:22,388 INFO L268 CegarLoopResult]: For program point L33-3(line 33) no Hoare annotation was computed. [2020-09-25 05:31:22,390 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 05:31:22,390 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 05:31:22,390 INFO L268 CegarLoopResult]: For program point L33-4(line 33) no Hoare annotation was computed. [2020-09-25 05:31:22,390 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 05:31:22,390 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 05:31:22,391 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 05:31:22,392 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 05:31:22,392 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 05:31:22,392 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-09-25 05:31:22,393 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-09-25 05:31:22,393 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,393 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,394 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,394 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 05:31:22,394 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 05:31:22,401 INFO L268 CegarLoopResult]: For program point L34-4(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,401 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 05:31:22,401 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L34-5(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L34-6(line 34) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 05:31:22,402 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 05:31:22,403 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-09-25 05:31:22,405 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-09-25 05:31:22,405 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-09-25 05:31:22,405 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 05:31:22,405 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:31:22,405 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-09-25 05:31:22,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:31:22 BoogieIcfgContainer [2020-09-25 05:31:22,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:31:22,420 INFO L168 Benchmark]: Toolchain (without parser) took 6427.15 ms. Allocated memory was 145.2 MB in the beginning and 251.7 MB in the end (delta: 106.4 MB). Free memory was 100.0 MB in the beginning and 129.1 MB in the end (delta: -29.1 MB). Peak memory consumption was 77.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:22,424 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:31:22,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.52 ms. Allocated memory is still 145.2 MB. Free memory was 99.4 MB in the beginning and 89.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:22,428 INFO L168 Benchmark]: Boogie Preprocessor took 124.40 ms. Allocated memory was 145.2 MB in the beginning and 199.8 MB in the end (delta: 54.5 MB). Free memory was 89.2 MB in the beginning and 176.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:22,429 INFO L168 Benchmark]: RCFGBuilder took 372.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 159.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:22,433 INFO L168 Benchmark]: TraceAbstraction took 5544.90 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 158.4 MB in the beginning and 129.1 MB in the end (delta: 29.3 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-09-25 05:31:22,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 145.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.52 ms. Allocated memory is still 145.2 MB. Free memory was 99.4 MB in the beginning and 89.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.40 ms. Allocated memory was 145.2 MB in the beginning and 199.8 MB in the end (delta: 54.5 MB). Free memory was 89.2 MB in the beginning and 176.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.35 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 159.1 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5544.90 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 158.4 MB in the beginning and 129.1 MB in the end (delta: 29.3 MB). Peak memory consumption was 81.2 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: 2.3s, 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 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, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s 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...