/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=DEEPEST --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/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:55:17,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:55:17,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:55:17,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:55:17,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:55:17,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:55:17,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:55:17,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:55:17,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:55:17,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:55:17,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:55:17,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:55:17,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:55:17,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:55:17,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:55:17,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:55:17,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:55:17,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:55:17,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:55:17,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:55:17,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:55:17,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:55:17,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:55:17,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:55:17,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:55:17,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:55:17,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:55:17,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:55:17,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:55:17,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 19:55:17,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:55:17,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:55:17,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:55:17,636 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 [2020-10-27 19:55:17,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:55:17,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:55:17,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:55:17,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:55:17,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:55:17,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:55:17,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:55:17,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:55:17,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:55:17,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:55:17,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:55:17,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:55:17,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:55:17,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:55:17,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:55:17,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:55:17,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:55:17,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:55:17,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:55:17,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:55:17,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:55:17,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:55:17,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:55:17,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:55:17,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:55:17,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:55:17,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:55:17,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:55:17,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:55:17,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:55:18,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:55:18,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:55:18,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:55:18,187 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:55:18,188 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:55:18,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-10-27 19:55:18,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e9802d1/01861cc2d78d4c3c8051c0885c51d9ff/FLAGa7cc8c861 [2020-10-27 19:55:18,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:55:18,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-10-27 19:55:18,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e9802d1/01861cc2d78d4c3c8051c0885c51d9ff/FLAGa7cc8c861 [2020-10-27 19:55:19,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41e9802d1/01861cc2d78d4c3c8051c0885c51d9ff [2020-10-27 19:55:19,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:55:19,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:55:19,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:19,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:55:19,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:55:19,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddc771c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19, skipping insertion in model container [2020-10-27 19:55:19,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:55:19,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:55:19,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:19,245 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:55:19,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:19,287 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:55:19,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19 WrapperNode [2020-10-27 19:55:19,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:19,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:55:19,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:55:19,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:55:19,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (1/1) ... [2020-10-27 19:55:19,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:55:19,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:55:19,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:55:19,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:55:19,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (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 [2020-10-27 19:55:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 19:55:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:55:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:55:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:55:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:55:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:55:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:55:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:55:19,947 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:55:19,948 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:55:19,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:19 BoogieIcfgContainer [2020-10-27 19:55:19,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:55:19,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:55:19,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:55:19,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:55:19,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:19" (1/3) ... [2020-10-27 19:55:19,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775fa30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:19, skipping insertion in model container [2020-10-27 19:55:19,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:19" (2/3) ... [2020-10-27 19:55:19,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@775fa30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:19, skipping insertion in model container [2020-10-27 19:55:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:19" (3/3) ... [2020-10-27 19:55:19,961 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-10-27 19:55:19,976 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:55:19,982 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:55:19,998 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:55:20,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:55:20,031 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:55:20,031 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:55:20,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:55:20,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:55:20,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:55:20,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:55:20,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:55:20,053 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 19:55:20,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 19:55:20,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:20,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:20,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 213392842, now seen corresponding path program 1 times [2020-10-27 19:55:20,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:20,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631793066] [2020-10-27 19:55:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 19:55:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:55:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-27 19:55:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:55:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 19:55:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 19:55:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:55:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:21,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:55:21,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:21,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:21,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:55:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:21,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 19:55:21,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:21,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 19:55:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:55:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:55:21,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 19:55:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:55:21,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:21,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:55:21,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:21,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:21,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:55:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:21,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 19:55:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:55:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 19:55:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631793066] [2020-10-27 19:55:21,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:21,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 19:55:21,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211517332] [2020-10-27 19:55:21,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:55:21,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:21,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:55:21,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:55:21,527 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-10-27 19:55:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:22,012 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-27 19:55:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 19:55:22,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-27 19:55:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:22,022 INFO L225 Difference]: With dead ends: 42 [2020-10-27 19:55:22,023 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:55:22,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-27 19:55:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:55:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:55:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:55:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:55:22,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-10-27 19:55:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:22,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:55:22,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:55:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:55:22,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:55:22,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:55:22,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:55:22,367 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 19:55:22,368 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 19:55:22,368 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 19:55:22,368 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 19:55:22,368 INFO L274 CegarLoopResult]: For program point initEXIT(lines 13 20) no Hoare annotation was computed. [2020-10-27 19:55:22,368 INFO L270 CegarLoopResult]: At program point initENTRY(lines 13 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-27 19:55:22,368 INFO L274 CegarLoopResult]: For program point initFINAL(lines 13 20) no Hoare annotation was computed. [2020-10-27 19:55:22,369 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:22,369 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 19:55:22,369 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:22,369 INFO L274 CegarLoopResult]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2020-10-27 19:55:22,369 INFO L277 CegarLoopResult]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2020-10-27 19:55:22,369 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-10-27 19:55:22,370 INFO L274 CegarLoopResult]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2020-10-27 19:55:22,370 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:22,370 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 19:55:22,370 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:55:22,370 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:22,370 INFO L274 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed. [2020-10-27 19:55:22,370 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 32 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-27 19:55:22,370 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 32 46) no Hoare annotation was computed. [2020-10-27 19:55:22,371 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 32 46) no Hoare annotation was computed. [2020-10-27 19:55:22,371 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-27 19:55:22,371 INFO L270 CegarLoopResult]: At program point L38(lines 33 46) the Hoare annotation is: false [2020-10-27 19:55:22,371 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-27 19:55:22,371 INFO L274 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-10-27 19:55:22,371 INFO L274 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-10-27 19:55:22,372 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-27 19:55:22,372 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 39) no Hoare annotation was computed. [2020-10-27 19:55:22,372 INFO L277 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-10-27 19:55:22,372 INFO L277 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: true [2020-10-27 19:55:22,372 INFO L274 CegarLoopResult]: For program point L36-2(lines 36 40) no Hoare annotation was computed. [2020-10-27 19:55:22,372 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 27 30) the Hoare annotation is: true [2020-10-27 19:55:22,372 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 27 30) no Hoare annotation was computed. [2020-10-27 19:55:22,373 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 27 30) no Hoare annotation was computed. [2020-10-27 19:55:22,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:22 BoogieIcfgContainer [2020-10-27 19:55:22,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:55:22,386 INFO L168 Benchmark]: Toolchain (without parser) took 3369.08 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 126.2 MB in the beginning and 128.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:22,388 INFO L168 Benchmark]: CDTParser took 1.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 123.1 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:22,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:22,390 INFO L168 Benchmark]: Boogie Preprocessor took 37.13 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:22,391 INFO L168 Benchmark]: RCFGBuilder took 622.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.9 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:22,392 INFO L168 Benchmark]: TraceAbstraction took 2431.46 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 133.7 MB in the beginning and 128.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:22,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 123.1 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.13 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 622.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.9 MB in the end (delta: -19.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2431.46 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 133.7 MB in the beginning and 128.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 37.6 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: 33]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 24 SDslu, 34 SDs, 0 SdLazy, 95 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 12 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 64 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 305 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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...