/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=SHALLOWEST --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/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:44:20,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:44:20,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:44:20,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:44:20,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:44:20,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:44:20,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:44:20,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:44:20,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:44:20,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:44:20,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:44:20,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:44:20,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:44:20,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:44:20,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:44:20,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:44:20,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:44:20,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:44:20,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:44:20,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:44:20,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:44:20,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:44:20,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:44:20,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:44:20,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:44:20,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:44:20,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:44:20,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:44:20,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:44:20,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:44:20,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:44:20,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:44:20,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:44:20,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:44:20,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:44:20,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:44:20,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:44:20,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:44:20,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:44:20,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:44:20,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:44:20,194 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 01:44:20,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:44:20,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:44:20,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:44:20,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:44:20,253 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:44:20,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:44:20,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:44:20,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:44:20,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:44:20,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:44:20,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:44:20,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:44:20,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:44:20,255 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:44:20,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:44:20,256 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:44:20,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:44:20,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:44:20,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:44:20,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:44:20,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:44:20,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:44:20,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:44:20,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:44:20,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:44:20,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:44:20,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:44:20,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:44:20,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:44:20,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:44:20,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:44:20,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:44:20,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:44:20,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:44:20,706 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:44:20,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2020-10-27 01:44:20,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1675fe63/d1d94d82c0ca4d0cba3c155861d65ef1/FLAG077d95d7a [2020-10-27 01:44:21,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:44:21,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c [2020-10-27 01:44:21,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1675fe63/d1d94d82c0ca4d0cba3c155861d65ef1/FLAG077d95d7a [2020-10-27 01:44:21,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1675fe63/d1d94d82c0ca4d0cba3c155861d65ef1 [2020-10-27 01:44:21,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:44:21,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:44:21,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:21,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:44:21,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:44:21,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:21,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d40235b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21, skipping insertion in model container [2020-10-27 01:44:21,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:21,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:44:21,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:44:21,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:21,935 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:44:21,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:21,974 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:44:21,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21 WrapperNode [2020-10-27 01:44:21,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:21,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:44:21,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:44:21,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:44:21,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:21,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (1/1) ... [2020-10-27 01:44:22,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:44:22,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:44:22,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:44:22,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:44:22,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (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 01:44:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:44:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:44:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:44:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:44:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:44:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:44:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:44:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:44:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:44:22,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:44:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:44:22,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:44:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:44:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:44:22,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:44:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:44:22,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:44:22,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:44:22,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:44:22,647 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:44:22,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:22 BoogieIcfgContainer [2020-10-27 01:44:22,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:44:22,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:44:22,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:44:22,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:44:22,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:44:21" (1/3) ... [2020-10-27 01:44:22,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610cea0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:22, skipping insertion in model container [2020-10-27 01:44:22,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:21" (2/3) ... [2020-10-27 01:44:22,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610cea0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:22, skipping insertion in model container [2020-10-27 01:44:22,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:22" (3/3) ... [2020-10-27 01:44:22,664 INFO L111 eAbstractionObserver]: Analyzing ICFG array-2.c [2020-10-27 01:44:22,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:44:22,684 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:44:22,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:44:22,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:44:22,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:44:22,756 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:44:22,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:44:22,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:44:22,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:44:22,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:44:22,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:44:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 01:44:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:44:22,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:22,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:22,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:22,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1934270437, now seen corresponding path program 1 times [2020-10-27 01:44:22,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:22,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418925069] [2020-10-27 01:44:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:23,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:23,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:44:23,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 01:44:23,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:44:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:44:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:23,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:44:23,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:23,356 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 01:44:23,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418925069] [2020-10-27 01:44:23,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:44:23,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 01:44:23,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722101950] [2020-10-27 01:44:23,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 01:44:23,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:23,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 01:44:23,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 01:44:23,383 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-27 01:44:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:23,492 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-27 01:44:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:44:23,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-27 01:44:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:23,502 INFO L225 Difference]: With dead ends: 40 [2020-10-27 01:44:23,502 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 01:44:23,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 01:44:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 01:44:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 01:44:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 01:44:23,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-27 01:44:23,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-10-27 01:44:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:23,545 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-27 01:44:23,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 01:44:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-27 01:44:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:44:23,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:23,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:23,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:44:23,547 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:23,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:23,548 INFO L82 PathProgramCache]: Analyzing trace with hash 761664538, now seen corresponding path program 1 times [2020-10-27 01:44:23,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:23,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929893107] [2020-10-27 01:44:23,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:23,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:23,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:23,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:44:23,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:23,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-27 01:44:23,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:23,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:44:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:44:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:44:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:23,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:24,004 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 01:44:24,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929893107] [2020-10-27 01:44:24,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:44:24,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:44:24,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813993516] [2020-10-27 01:44:24,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:44:24,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:24,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:44:24,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:44:24,009 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-10-27 01:44:24,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:24,110 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-27 01:44:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:44:24,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-27 01:44:24,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:24,113 INFO L225 Difference]: With dead ends: 26 [2020-10-27 01:44:24,114 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 01:44:24,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:44:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 01:44:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-27 01:44:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-27 01:44:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-27 01:44:24,132 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-10-27 01:44:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:24,132 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-27 01:44:24,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:44:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-27 01:44:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:44:24,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:24,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:24,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:44:24,137 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash 726671833, now seen corresponding path program 1 times [2020-10-27 01:44:24,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:24,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80721903] [2020-10-27 01:44:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:44:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 01:44:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:44:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:44:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:44:25,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:25,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80721903] [2020-10-27 01:44:25,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:44:25,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:44:25,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697778709] [2020-10-27 01:44:25,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:44:25,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:25,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:44:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:44:25,029 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2020-10-27 01:44:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:25,470 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-27 01:44:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:44:25,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-27 01:44:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:25,472 INFO L225 Difference]: With dead ends: 26 [2020-10-27 01:44:25,472 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 01:44:25,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:44:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 01:44:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-27 01:44:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 01:44:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-27 01:44:25,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-10-27 01:44:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:25,480 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-27 01:44:25,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:44:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-27 01:44:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:44:25,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:25,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:25,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:44:25,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:25,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:25,483 INFO L82 PathProgramCache]: Analyzing trace with hash 46613463, now seen corresponding path program 1 times [2020-10-27 01:44:25,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:25,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027403906] [2020-10-27 01:44:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:44:25,504 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:44:25,504 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:44:25,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:44:25,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:44:25 BoogieIcfgContainer [2020-10-27 01:44:25,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:44:25,528 INFO L168 Benchmark]: Toolchain (without parser) took 3838.02 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 132.3 MB in the beginning and 104.9 MB in the end (delta: 27.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:25,528 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:44:25,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 122.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:25,530 INFO L168 Benchmark]: Boogie Preprocessor took 42.31 ms. Allocated memory is still 157.3 MB. Free memory was 122.4 MB in the beginning and 120.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:25,531 INFO L168 Benchmark]: RCFGBuilder took 630.85 ms. Allocated memory is still 157.3 MB. Free memory was 120.9 MB in the beginning and 106.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:25,532 INFO L168 Benchmark]: TraceAbstraction took 2871.04 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 106.5 MB in the beginning and 104.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:25,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 157.3 MB. Free memory is still 129.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.93 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 122.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.31 ms. Allocated memory is still 157.3 MB. Free memory was 122.4 MB in the beginning and 120.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.85 ms. Allocated memory is still 157.3 MB. Free memory was 120.9 MB in the beginning and 106.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2871.04 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 106.5 MB in the beginning and 104.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 33.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int SIZE=1; [L16] unsigned int j,k; [L17] int array[SIZE], menor; [L19] menor = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE jmenor) [L6] COND TRUE !(cond) [L7] CALL reach_error() [L3] __assert_fail("0", "array-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 24 SDslu, 54 SDs, 0 SdLazy, 111 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2850 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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 incorrect! Received shutdown request...