/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:38:43,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:38:43,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:38:43,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:38:43,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:38:43,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:38:43,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:38:43,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:38:43,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:38:43,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:38:43,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:38:43,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:38:43,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:38:43,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:38:43,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:38:43,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:38:43,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:38:43,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:38:43,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:38:43,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:38:43,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:38:43,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:38:43,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:38:43,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:38:43,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:38:43,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:38:43,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:38:43,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:38:43,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:38:43,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:38:43,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:38:43,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:38:43,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:38:43,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:38:43,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:38:43,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:38:43,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:38:43,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:38:43,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:38:43,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:38:43,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:38:43,890 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 [2020-10-28 14:38:43,942 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:38:43,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:38:43,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:38:43,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:38:43,948 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:38:43,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:38:43,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:38:43,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:38:43,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:38:43,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:38:43,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:38:43,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:38:43,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:38:43,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:38:43,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:38:43,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:38:43,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:38:43,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:38:43,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:38:43,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:38:43,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:38:43,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:38:43,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:38:43,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:38:43,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:38:43,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:38:43,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:38:43,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:38:43,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:38:43,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:38:44,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:38:44,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:38:44,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:38:44,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:38:44,450 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:38:44,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2020-10-28 14:38:44,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e582c9bf/129c0632639c4b3e87b82b0aea0d4650/FLAG61ccd2464 [2020-10-28 14:38:45,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:38:45,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test05.c [2020-10-28 14:38:45,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e582c9bf/129c0632639c4b3e87b82b0aea0d4650/FLAG61ccd2464 [2020-10-28 14:38:45,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e582c9bf/129c0632639c4b3e87b82b0aea0d4650 [2020-10-28 14:38:45,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:38:45,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:38:45,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:45,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:38:45,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:38:45,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519ff90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45, skipping insertion in model container [2020-10-28 14:38:45,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:38:45,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:38:45,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:45,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:38:45,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:45,809 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:38:45,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45 WrapperNode [2020-10-28 14:38:45,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:45,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:38:45,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:38:45,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:38:45,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (1/1) ... [2020-10-28 14:38:45,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:38:45,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:38:45,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:38:45,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:38:45,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (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 [2020-10-28 14:38:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:38:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:38:45,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:38:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-28 14:38:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-28 14:38:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:38:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:38:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:38:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:38:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-28 14:38:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:38:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:38:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:38:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:38:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:38:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:38:46,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:38:46,331 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:38:46,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:46 BoogieIcfgContainer [2020-10-28 14:38:46,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:38:46,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:38:46,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:38:46,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:38:46,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:38:45" (1/3) ... [2020-10-28 14:38:46,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdcda7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:46, skipping insertion in model container [2020-10-28 14:38:46,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:45" (2/3) ... [2020-10-28 14:38:46,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdcda7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:46, skipping insertion in model container [2020-10-28 14:38:46,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:46" (3/3) ... [2020-10-28 14:38:46,343 INFO L111 eAbstractionObserver]: Analyzing ICFG test05.c [2020-10-28 14:38:46,356 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:38:46,361 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:38:46,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:38:46,407 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:38:46,408 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:38:46,408 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:38:46,408 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:38:46,408 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:38:46,408 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:38:46,408 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:38:46,408 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:38:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-28 14:38:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 14:38:46,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:46,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:38:46,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:46,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2038116802, now seen corresponding path program 1 times [2020-10-28 14:38:46,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:46,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680331793] [2020-10-28 14:38:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 14:38:47,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-28 14:38:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:38:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:38:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:38:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:47,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:38:47,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:47,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:47,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:47,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 14:38:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:38:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:38:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:38:47,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680331793] [2020-10-28 14:38:47,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:47,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:38:47,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206522770] [2020-10-28 14:38:47,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:38:47,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:47,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:38:47,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:38:47,434 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-10-28 14:38:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:47,785 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-28 14:38:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:38:47,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-28 14:38:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:47,796 INFO L225 Difference]: With dead ends: 41 [2020-10-28 14:38:47,796 INFO L226 Difference]: Without dead ends: 22 [2020-10-28 14:38:47,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:38:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-28 14:38:47,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-28 14:38:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 14:38:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-28 14:38:47,847 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-10-28 14:38:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:47,848 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-28 14:38:47,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:38:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-28 14:38:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:38:47,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:47,849 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] [2020-10-28 14:38:47,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:38:47,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -196382947, now seen corresponding path program 1 times [2020-10-28 14:38:47,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:47,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623306177] [2020-10-28 14:38:47,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:38:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-28 14:38:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:38:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 14:38:48,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:38:48,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:48,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:38:48,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:48,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:48,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:48,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:38:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:48,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 14:38:48,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:48,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:38:48,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:38:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:48,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:38:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:38:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:48,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:38:48,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623306177] [2020-10-28 14:38:48,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:48,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:38:48,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832229561] [2020-10-28 14:38:48,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:38:48,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:48,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:38:48,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:38:48,553 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-10-28 14:38:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:48,822 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-10-28 14:38:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:38:48,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 14:38:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:48,824 INFO L225 Difference]: With dead ends: 25 [2020-10-28 14:38:48,824 INFO L226 Difference]: Without dead ends: 22 [2020-10-28 14:38:48,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:38:48,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-28 14:38:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-28 14:38:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-28 14:38:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-10-28 14:38:48,833 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-10-28 14:38:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:48,833 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-10-28 14:38:48,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:38:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-10-28 14:38:48,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 14:38:48,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:48,834 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] [2020-10-28 14:38:48,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:38:48,835 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:48,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1792857716, now seen corresponding path program 1 times [2020-10-28 14:38:48,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:48,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572115654] [2020-10-28 14:38:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 14:38:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-10-28 14:38:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:49,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 14:38:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:38:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 14:38:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:49,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:38:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:49,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:38:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:49,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 14:38:49,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 14:38:49,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:49,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:38:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:49,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:38:49,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-28 14:38:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:49,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:49,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:49,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:49,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:38:49,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:49,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:38:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:38:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:38:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:38:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:38:49,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572115654] [2020-10-28 14:38:49,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:49,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 14:38:49,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197454450] [2020-10-28 14:38:49,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:38:49,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:49,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:38:49,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:38:49,881 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 11 states. [2020-10-28 14:38:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:50,341 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-10-28 14:38:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:38:50,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-28 14:38:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:50,342 INFO L225 Difference]: With dead ends: 22 [2020-10-28 14:38:50,342 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:38:50,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:38:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:38:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:38:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:38:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:38:50,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-28 14:38:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:50,345 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:38:50,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:38:50,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:38:50,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:38:50,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:38:50,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:38:50,622 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:38:50,622 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:38:50,622 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:38:50,623 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:38:50,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:50,623 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:38:50,623 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:50,624 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |f_#in~a| f_~a) (= |#memory_int| |old(#memory_int)|) (= |f_#in~p2.base| f_~p2.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= f_~p1.offset |f_#in~p1.offset|) (= |f_#in~p1.base| f_~p1.base) (= f_~p2.offset |f_#in~p2.offset|)) [2020-10-28 14:38:50,624 INFO L274 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-10-28 14:38:50,624 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-28 14:38:50,624 INFO L274 CegarLoopResult]: For program point fEXIT(lines 13 20) no Hoare annotation was computed. [2020-10-28 14:38:50,624 INFO L270 CegarLoopResult]: At program point fENTRY(lines 13 20) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-28 14:38:50,625 INFO L274 CegarLoopResult]: For program point fFINAL(lines 13 20) no Hoare annotation was computed. [2020-10-28 14:38:50,625 INFO L274 CegarLoopResult]: For program point gEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-28 14:38:50,625 INFO L274 CegarLoopResult]: For program point gFINAL(lines 6 11) no Hoare annotation was computed. [2020-10-28 14:38:50,625 INFO L270 CegarLoopResult]: At program point gENTRY(lines 6 11) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-28 14:38:50,625 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:50,625 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:38:50,625 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 22 48) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 48) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 48) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L270 CegarLoopResult]: At program point L41(lines 22 48) the Hoare annotation is: false [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-10-28 14:38:50,626 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-28 14:38:50,627 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#p2~0.base|) |main_~#p2~0.offset|))) (and (not (= .cse0 |main_~#a~0.base|)) (= |main_#t~mem11| 4) (not (= |main_~#p2~0.base| |main_~#a~0.base|)) (not (= |main_~#p1~0.base| |main_~#a~0.base|)) (not (= .cse0 |main_~#p1~0.base|)))) [2020-10-28 14:38:50,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:38:50 BoogieIcfgContainer [2020-10-28 14:38:50,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:38:50,641 INFO L168 Benchmark]: Toolchain (without parser) took 5091.31 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.0 MB in the beginning and 81.5 MB in the end (delta: 48.5 MB). Peak memory consumption was 81.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:50,642 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:38:50,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.37 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:50,644 INFO L168 Benchmark]: Boogie Preprocessor took 41.05 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:50,644 INFO L168 Benchmark]: RCFGBuilder took 480.24 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 99.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:50,646 INFO L168 Benchmark]: TraceAbstraction took 4302.86 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 98.9 MB in the beginning and 81.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 49.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:50,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 125.8 MB. Free memory is still 85.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.37 ms. Allocated memory is still 154.1 MB. Free memory was 129.3 MB in the beginning and 119.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.05 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 480.24 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 99.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4302.86 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 98.9 MB in the beginning and 81.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 49.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 22]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 38 SDslu, 86 SDs, 0 SdLazy, 241 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 124 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 9159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...