/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/test04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:26:23,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:26:23,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:26:23,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:26:23,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:26:23,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:26:23,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:26:23,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:26:23,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:26:23,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:26:23,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:26:23,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:26:23,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:26:23,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:26:23,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:26:23,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:26:23,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:26:23,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:26:23,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:26:23,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:26:23,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:26:23,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:26:23,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:26:23,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:26:23,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:26:23,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:26:23,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:26:23,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:26:23,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:26:23,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:26:23,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:26:23,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:26:23,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:26:23,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:26:23,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:26:23,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:26:23,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:26:23,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:26:23,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:26:23,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:26:23,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:26:23,925 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 [2020-09-21 12:26:23,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:26:23,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:26:23,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:26:23,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:26:23,978 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:26:23,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:26:23,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:26:23,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:26:23,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:26:23,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:26:23,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:26:23,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:26:23,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:26:23,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:26:23,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:26:23,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:26:23,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:26:23,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:26:23,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:26:23,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:26:23,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:26:23,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:23,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:26:23,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:26:23,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:26:23,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:26:23,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:26:23,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:26:23,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:26:23,988 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:26:24,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:26:24,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:26:24,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:26:24,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:26:24,527 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:26:24,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test04.c [2020-09-21 12:26:24,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75c4bc23/463c5cb32d10463487af9f56e618d6db/FLAG81eb507ab [2020-09-21 12:26:25,176 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:26:25,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test04.c [2020-09-21 12:26:25,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75c4bc23/463c5cb32d10463487af9f56e618d6db/FLAG81eb507ab [2020-09-21 12:26:25,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e75c4bc23/463c5cb32d10463487af9f56e618d6db [2020-09-21 12:26:25,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:26:25,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:26:25,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:25,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:26:25,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:26:25,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:25,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25, skipping insertion in model container [2020-09-21 12:26:25,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:25,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:26:25,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:26:25,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:25,849 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:26:25,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:25,891 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:26:25,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25 WrapperNode [2020-09-21 12:26:25,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:25,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:26:25,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:26:25,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:26:25,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:25,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (1/1) ... [2020-09-21 12:26:26,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:26:26,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:26:26,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:26:26,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:26:26,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (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 [2020-09-21 12:26:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:26:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:26:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-21 12:26:26,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:26:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:26:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-21 12:26:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:26:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:26:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:26:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:26:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:26:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:26:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:26:26,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:26:26,339 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:26:26,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:26 BoogieIcfgContainer [2020-09-21 12:26:26,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:26:26,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:26:26,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:26:26,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:26:26,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:26:25" (1/3) ... [2020-09-21 12:26:26,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23199d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:26, skipping insertion in model container [2020-09-21 12:26:26,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:25" (2/3) ... [2020-09-21 12:26:26,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23199d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:26, skipping insertion in model container [2020-09-21 12:26:26,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:26" (3/3) ... [2020-09-21 12:26:26,358 INFO L109 eAbstractionObserver]: Analyzing ICFG test04.c [2020-09-21 12:26:26,370 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:26:26,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:26:26,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:26:26,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:26:26,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:26:26,430 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:26:26,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:26:26,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:26:26,431 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:26:26,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:26:26,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:26:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-21 12:26:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:26:26,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:26,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:26,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1498735640, now seen corresponding path program 1 times [2020-09-21 12:26:26,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:26,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804894788] [2020-09-21 12:26:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:26:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-21 12:26:27,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:27,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:26:27,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:26:27,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:26:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:27,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:26:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:27,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:26:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:27,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:26:27,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:27,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:26:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:27,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804894788] [2020-09-21 12:26:27,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:27,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:26:27,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820071110] [2020-09-21 12:26:27,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:26:27,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:27,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:26:27,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:26:27,470 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-09-21 12:26:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:27,615 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-09-21 12:26:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:26:27,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-21 12:26:27,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:27,627 INFO L225 Difference]: With dead ends: 22 [2020-09-21 12:26:27,627 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:26:27,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:26:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:26:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:26:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:26:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:26:27,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-21 12:26:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:27,664 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:26:27,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:26:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:26:27,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:26:27,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:26:27,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:26:27,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:26:27,736 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|)) [2020-09-21 12:26:27,736 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:26:27,736 INFO L268 CegarLoopResult]: For program point fEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-21 12:26:27,736 INFO L271 CegarLoopResult]: At program point fENTRY(lines 4 6) the Hoare annotation is: true [2020-09-21 12:26:27,737 INFO L268 CegarLoopResult]: For program point fFINAL(lines 4 6) no Hoare annotation was computed. [2020-09-21 12:26:27,737 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:26:27,737 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:26:27,737 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:26:27,737 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:26:27,738 INFO L264 CegarLoopResult]: At program point L17(lines 8 24) the Hoare annotation is: false [2020-09-21 12:26:27,738 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-21 12:26:27,738 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2020-09-21 12:26:27,739 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (= main_~p1~0.base |main_~#a~0.base|)) [2020-09-21 12:26:27,739 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 24) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-21 12:26:27,739 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-21 12:26:27,739 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 24) no Hoare annotation was computed. [2020-09-21 12:26:27,740 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 24) no Hoare annotation was computed. [2020-09-21 12:26:27,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:27 BoogieIcfgContainer [2020-09-21 12:26:27,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:27,769 INFO L168 Benchmark]: Toolchain (without parser) took 2224.08 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 97.6 MB in the end (delta: 5.2 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:27,771 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:26:27,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.22 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:27,775 INFO L168 Benchmark]: Boogie Preprocessor took 124.18 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:27,776 INFO L168 Benchmark]: RCFGBuilder took 326.46 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:27,778 INFO L168 Benchmark]: TraceAbstraction took 1415.20 ms. Allocated memory is still 202.4 MB. Free memory was 166.9 MB in the beginning and 97.6 MB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:27,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.22 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.18 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.46 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1415.20 ms. Allocated memory is still 202.4 MB. Free memory was 166.9 MB in the beginning and 97.6 MB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: 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 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 2 SDslu, 35 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 28 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 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...