/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/array-fpi/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:35:21,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:35:21,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:35:21,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:35:21,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:35:21,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:35:21,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:35:21,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:35:21,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:35:21,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:35:21,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:35:21,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:35:21,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:35:21,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:35:21,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:35:21,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:35:21,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:35:21,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:35:21,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:35:21,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:35:21,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:35:21,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:35:21,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:35:21,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:35:21,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:35:21,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:35:21,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:35:21,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:35:21,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:35:21,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:35:21,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:35:21,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:35:21,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:35:21,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:35:21,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:35:21,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:35:21,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:35:21,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:35:21,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:35:21,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:35:21,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:35:21,987 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 14:35:22,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:35:22,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:35:22,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:35:22,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:35:22,040 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:35:22,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:35:22,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:35:22,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:35:22,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:35:22,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:35:22,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:35:22,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:35:22,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:35:22,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:35:22,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:35:22,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:35:22,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:35:22,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:35:22,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:35:22,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:35:22,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:35:22,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:35:22,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:35:22,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:35:22,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:35:22,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:35:22,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:35:22,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:35:22,046 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:35:22,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:35:22,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:35:22,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:35:22,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:35:22,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:35:22,508 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:35:22,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-27 14:35:22,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cd1c2b97/cd03fe401f9249a69a5f99f4b8920581/FLAG6251b255c [2020-10-27 14:35:23,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:35:23,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-27 14:35:23,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cd1c2b97/cd03fe401f9249a69a5f99f4b8920581/FLAG6251b255c [2020-10-27 14:35:23,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cd1c2b97/cd03fe401f9249a69a5f99f4b8920581 [2020-10-27 14:35:23,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:35:23,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:35:23,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:35:23,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:35:23,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:35:23,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1916843a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23, skipping insertion in model container [2020-10-27 14:35:23,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:35:23,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:35:23,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:35:23,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:35:23,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:35:23,907 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:35:23,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23 WrapperNode [2020-10-27 14:35:23,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:35:23,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:35:23,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:35:23,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:35:23,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (1/1) ... [2020-10-27 14:35:23,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:35:24,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:35:24,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:35:24,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:35:24,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (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 14:35:24,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:35:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:35:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:35:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:35:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:35:24,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:35:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:35:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:35:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:35:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:35:24,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:35:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:35:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:35:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:35:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:35:24,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:35:24,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:35:24,476 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:35:24,477 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:35:24,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:35:24 BoogieIcfgContainer [2020-10-27 14:35:24,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:35:24,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:35:24,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:35:24,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:35:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:35:23" (1/3) ... [2020-10-27 14:35:24,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f8220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:35:24, skipping insertion in model container [2020-10-27 14:35:24,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:35:23" (2/3) ... [2020-10-27 14:35:24,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f8220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:35:24, skipping insertion in model container [2020-10-27 14:35:24,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:35:24" (3/3) ... [2020-10-27 14:35:24,488 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-10-27 14:35:24,501 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:35:24,506 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:35:24,520 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:35:24,549 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:35:24,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:35:24,549 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:35:24,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:35:24,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:35:24,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:35:24,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:35:24,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:35:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-27 14:35:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:35:24,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:24,577 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] [2020-10-27 14:35:24,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-10-27 14:35:24,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:24,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789921967] [2020-10-27 14:35:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:24,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:25,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:35:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:35:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 14:35:25,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:35:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:35:25,258 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 14:35:25,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:25,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:25,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:25,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 14:35:25,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:35:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:25,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:25,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:25,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:35:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:35:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:35:25,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:35:25,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789921967] [2020-10-27 14:35:25,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:35:25,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:35:25,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029527916] [2020-10-27 14:35:25,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:35:25,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:25,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:35:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:35:25,382 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-10-27 14:35:25,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:25,539 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-27 14:35:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:35:25,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:35:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:25,550 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:35:25,550 INFO L226 Difference]: Without dead ends: 27 [2020-10-27 14:35:25,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:35:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-27 14:35:25,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-27 14:35:25,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 14:35:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-27 14:35:25,600 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-10-27 14:35:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:25,601 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-27 14:35:25,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:35:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-27 14:35:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:35:25,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:25,602 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] [2020-10-27 14:35:25,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:35:25,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-10-27 14:35:25,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:25,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448762366] [2020-10-27 14:35:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:25,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:25,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:35:25,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:35:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-27 14:35:25,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:35:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:35:25,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:35:25,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:26,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:26,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:35:26,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:26,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:35:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:35:26,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448762366] [2020-10-27 14:35:26,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:35:26,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:35:26,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977000276] [2020-10-27 14:35:26,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:35:26,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:35:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:35:26,090 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-27 14:35:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:26,311 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-27 14:35:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:35:26,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:35:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:26,313 INFO L225 Difference]: With dead ends: 40 [2020-10-27 14:35:26,313 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 14:35:26,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:35:26,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 14:35:26,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 14:35:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:35:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-27 14:35:26,329 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 22 [2020-10-27 14:35:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:26,334 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-27 14:35:26,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:35:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-27 14:35:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:35:26,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:26,335 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] [2020-10-27 14:35:26,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:35:26,336 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1214934215, now seen corresponding path program 1 times [2020-10-27 14:35:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:26,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737498582] [2020-10-27 14:35:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:27,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 14:35:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:35:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-10-27 14:35:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:35:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:35:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:35:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:27,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:35:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:35:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:35:27,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:35:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:35:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:35:27,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:35:27,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:35:27,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:35:27,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:35:27,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:35:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:35:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:35:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:35:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:35:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:35:27,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737498582] [2020-10-27 14:35:27,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:35:27,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:35:27,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245978299] [2020-10-27 14:35:27,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:35:27,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:35:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:35:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:35:27,516 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2020-10-27 14:35:27,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:35:27,639 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-27 14:35:27,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:35:27,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-27 14:35:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:35:27,640 INFO L225 Difference]: With dead ends: 48 [2020-10-27 14:35:27,640 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:35:27,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:35:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:35:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-27 14:35:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:35:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-27 14:35:27,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2020-10-27 14:35:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:35:27,653 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-27 14:35:27,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:35:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-27 14:35:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:35:27,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:35:27,654 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] [2020-10-27 14:35:27,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:35:27,655 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:35:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:35:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-10-27 14:35:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:35:27,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922713300] [2020-10-27 14:35:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:35:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 14:35:27,671 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 14:35:27,671 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:35:27,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:35:27,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:35:27 BoogieIcfgContainer [2020-10-27 14:35:27,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:35:27,693 INFO L168 Benchmark]: Toolchain (without parser) took 4080.27 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.7 MB in the beginning and 136.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:27,693 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:35:27,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:27,695 INFO L168 Benchmark]: Boogie Preprocessor took 86.24 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:27,696 INFO L168 Benchmark]: RCFGBuilder took 478.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 131.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:27,697 INFO L168 Benchmark]: TraceAbstraction took 3210.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.9 MB in the beginning and 136.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 8.0 GB. [2020-10-27 14:35:27,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 125.8 MB. Free memory is still 103.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.24 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 131.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3210.33 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.9 MB in the beginning and 136.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 24.2 MB. 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i