/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:53:25,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:53:25,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:53:25,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:53:25,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:53:25,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:53:25,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:53:25,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:53:25,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:53:25,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:53:25,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:53:25,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:53:25,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:53:25,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:53:25,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:53:25,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:53:25,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:53:25,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:53:25,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:53:25,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:53:25,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:53:25,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:53:25,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:53:25,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:53:25,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:53:25,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:53:25,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:53:25,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:53:25,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:53:25,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:53:25,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:53:25,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:53:25,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:53:25,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:53:25,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:53:25,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:53:25,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:53:25,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:53:25,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:53:25,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:53:25,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:53:25,975 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 [2020-10-29 03:53:26,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:53:26,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:53:26,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:53:26,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:53:26,027 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:53:26,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:53:26,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:53:26,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:53:26,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:53:26,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:53:26,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:53:26,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:53:26,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:53:26,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:53:26,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:53:26,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:53:26,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:53:26,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:53:26,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:53:26,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:53:26,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:53:26,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:53:26,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:53:26,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:53:26,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:53:26,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:53:26,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:53:26,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:53:26,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:53:26,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:53:26,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:53:26,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:53:26,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:53:26,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:53:26,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:53:26,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-10-29 03:53:26,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b7b37e/b519ed7f01d541c39f44423065d00d8c/FLAG23f9c7b1e [2020-10-29 03:53:27,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:53:27,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-10-29 03:53:27,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b7b37e/b519ed7f01d541c39f44423065d00d8c/FLAG23f9c7b1e [2020-10-29 03:53:27,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b7b37e/b519ed7f01d541c39f44423065d00d8c [2020-10-29 03:53:27,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:53:27,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:53:27,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:27,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:53:27,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:53:27,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca0bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27, skipping insertion in model container [2020-10-29 03:53:27,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:53:27,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:53:27,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:27,862 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:53:27,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:27,907 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:53:27,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27 WrapperNode [2020-10-29 03:53:27,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:27,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:53:27,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:53:27,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:53:27,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (1/1) ... [2020-10-29 03:53:27,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:53:27,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:53:27,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:53:27,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:53:27,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (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 [2020-10-29 03:53:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:53:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:53:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:53:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:53:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:53:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:53:28,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:53:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:53:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:53:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:53:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:53:28,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:53:28,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:53:28,481 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:53:28,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:28 BoogieIcfgContainer [2020-10-29 03:53:28,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:53:28,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:53:28,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:53:28,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:53:28,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:53:27" (1/3) ... [2020-10-29 03:53:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df5a156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:28, skipping insertion in model container [2020-10-29 03:53:28,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:27" (2/3) ... [2020-10-29 03:53:28,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df5a156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:28, skipping insertion in model container [2020-10-29 03:53:28,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:28" (3/3) ... [2020-10-29 03:53:28,495 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-10-29 03:53:28,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:53:28,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:53:28,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:53:28,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:53:28,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:53:28,589 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:53:28,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:53:28,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:53:28,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:53:28,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:53:28,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:53:28,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 03:53:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:53:28,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:28,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:28,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:28,641 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-10-29 03:53:28,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:28,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721883797] [2020-10-29 03:53:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:29,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:53:29,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:53:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-29 03:53:29,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:29,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:53:29,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:53:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:53:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:53:29,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:29,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:29,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:29,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:53:29,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:29,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:29,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:29,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:29,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:29,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:29,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:29,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:53:29,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:29,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:29,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:29,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:29,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721883797] [2020-10-29 03:53:29,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:53:29,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:53:29,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172420285] [2020-10-29 03:53:29,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:53:29,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:53:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:53:29,903 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 03:53:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:30,236 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2020-10-29 03:53:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:53:30,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 03:53:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:30,255 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:53:30,255 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:53:30,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:53:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:53:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-29 03:53:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:53:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-29 03:53:30,328 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-29 03:53:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:30,329 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-29 03:53:30,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:53:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-29 03:53:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:53:30,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:30,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:30,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:53:30,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-10-29 03:53:30,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:30,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924214688] [2020-10-29 03:53:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 03:53:30,368 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 03:53:30,368 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 03:53:30,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:53:30,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 03:53:30 BoogieIcfgContainer [2020-10-29 03:53:30,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 03:53:30,395 INFO L168 Benchmark]: Toolchain (without parser) took 2786.19 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 143.1 MB in the end (delta: -17.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 8.0 GB. [2020-10-29 03:53:30,396 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:53:30,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 03:53:30,398 INFO L168 Benchmark]: Boogie Preprocessor took 44.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 03:53:30,399 INFO L168 Benchmark]: RCFGBuilder took 528.52 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 97.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 03:53:30,400 INFO L168 Benchmark]: TraceAbstraction took 1905.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.0 MB in the beginning and 143.1 MB in the end (delta: -46.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 03:53:30,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 528.52 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 97.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1905.85 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 97.0 MB in the beginning and 143.1 MB in the end (delta: -46.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ [L35] COND FALSE !(i