/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/test_union_cast-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:39:45,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:39:45,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:39:45,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:39:45,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:39:45,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:39:45,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:39:45,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:39:45,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:39:45,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:39:45,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:39:45,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:39:45,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:39:45,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:39:45,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:39:45,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:39:45,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:39:45,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:39:45,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:39:45,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:39:45,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:39:45,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:39:45,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:39:45,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:39:45,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:39:45,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:39:45,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:39:45,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:39:45,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:39:45,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:39:45,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:39:45,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:39:45,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:39:45,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:39:45,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:39:45,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:39:45,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:39:45,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:39:45,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:39:45,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:39:45,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:39:45,948 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 14:39:46,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:39:46,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:39:46,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:39:46,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:39:46,018 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:39:46,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:39:46,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:39:46,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:39:46,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:39:46,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:39:46,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:39:46,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:39:46,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:39:46,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:39:46,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:39:46,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:39:46,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:39:46,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:39:46,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:39:46,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:39:46,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:39:46,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:39:46,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:39:46,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:39:46,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:39:46,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:39:46,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:39:46,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:39:46,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:39:46,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:39:46,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:39:46,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:39:46,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:39:46,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:39:46,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:39:46,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-10-28 14:39:46,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a16c34/9a411f98e45d4415974230328b43ce10/FLAGc5d5c014d [2020-10-28 14:39:47,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:39:47,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-10-28 14:39:47,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a16c34/9a411f98e45d4415974230328b43ce10/FLAGc5d5c014d [2020-10-28 14:39:47,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c71a16c34/9a411f98e45d4415974230328b43ce10 [2020-10-28 14:39:47,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:39:47,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:39:47,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:39:47,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:39:47,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:39:47,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7591c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47, skipping insertion in model container [2020-10-28 14:39:47,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:39:47,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:39:47,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:39:47,838 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:39:47,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:39:47,890 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:39:47,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47 WrapperNode [2020-10-28 14:39:47,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:39:47,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:39:47,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:39:47,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:39:47,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (1/1) ... [2020-10-28 14:39:47,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:39:47,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:39:47,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:39:47,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:39:47,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (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 14:39:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:39:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:39:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:39:48,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 14:39:48,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:39:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:39:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:39:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:39:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:39:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:39:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:39:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:39:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:39:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-28 14:39:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:39:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-28 14:39:48,513 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:39:48,513 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:39:48,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:39:48 BoogieIcfgContainer [2020-10-28 14:39:48,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:39:48,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:39:48,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:39:48,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:39:48,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:39:47" (1/3) ... [2020-10-28 14:39:48,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6505b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:39:48, skipping insertion in model container [2020-10-28 14:39:48,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:39:47" (2/3) ... [2020-10-28 14:39:48,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6505b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:39:48, skipping insertion in model container [2020-10-28 14:39:48,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:39:48" (3/3) ... [2020-10-28 14:39:48,531 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union_cast-2.i [2020-10-28 14:39:48,546 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:39:48,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:39:48,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:39:48,633 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:39:48,633 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:39:48,633 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:39:48,635 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:39:48,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:39:48,638 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:39:48,638 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:39:48,638 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:39:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-28 14:39:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 14:39:48,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:39:48,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:39:48,672 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:39:48,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:39:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1009234067, now seen corresponding path program 1 times [2020-10-28 14:39:48,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:39:48,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695162842] [2020-10-28 14:39:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:39:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:39:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-28 14:39:49,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:49,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:39:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:39:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:39:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 14:39:49,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:39:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:39:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:39:49,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:39:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:39:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:39:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:39:49,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:39:49,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:39:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:39:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:39:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:39:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:39:49,515 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 14:39:49,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695162842] [2020-10-28 14:39:49,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:39:49,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:39:49,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821526785] [2020-10-28 14:39:49,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:39:49,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:39:49,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:39:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:39:49,545 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-10-28 14:39:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:39:49,762 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-10-28 14:39:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:39:49,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-28 14:39:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:39:49,771 INFO L225 Difference]: With dead ends: 30 [2020-10-28 14:39:49,771 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:39:49,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:39:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:39:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:39:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:39:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:39:49,806 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-28 14:39:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:39:49,807 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:39:49,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:39:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:39:49,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:39:49,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:39:49,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:39:49,991 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 14:39:49,992 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 14:39:49,992 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 14:39:49,992 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 14:39:49,992 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 14:39:49,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:39:49,993 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~CURRENTLY_UNKNOWN~0 |old(~CURRENTLY_UNKNOWN~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-28 14:39:49,993 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:39:49,993 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:39:49,993 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:39:49,994 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:39:49,994 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:39:49,994 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 33 39) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-28 14:39:49,994 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 33 39) no Hoare annotation was computed. [2020-10-28 14:39:49,994 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 33 39) no Hoare annotation was computed. [2020-10-28 14:39:49,994 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |main_#t~mem3| 10) [2020-10-28 14:39:49,995 INFO L274 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-10-28 14:39:49,995 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 14:39:49,995 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2020-10-28 14:39:49,995 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-28 14:39:49,995 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-28 14:39:49,995 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2020-10-28 14:39:49,996 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2020-10-28 14:39:50,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:39:50 BoogieIcfgContainer [2020-10-28 14:39:50,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:39:50,004 INFO L168 Benchmark]: Toolchain (without parser) took 2509.49 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 100.5 MB in the beginning and 134.3 MB in the end (delta: -33.7 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:39:50,005 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:39:50,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.44 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 90.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:39:50,007 INFO L168 Benchmark]: Boogie Preprocessor took 60.70 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:39:50,008 INFO L168 Benchmark]: RCFGBuilder took 558.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.0 MB in the beginning and 76.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:39:50,009 INFO L168 Benchmark]: TraceAbstraction took 1480.51 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 75.7 MB in the beginning and 134.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:39:50,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.44 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 90.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.70 ms. Allocated memory is still 125.8 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 558.61 ms. Allocated memory is still 125.8 MB. Free memory was 89.0 MB in the beginning and 76.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1480.51 ms. Allocated memory was 125.8 MB in the beginning and 160.4 MB in the end (delta: 34.6 MB). Free memory was 75.7 MB in the beginning and 134.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 45 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 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...