/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:46:13,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:46:13,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:46:13,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:46:13,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:46:13,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:46:13,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:46:13,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:46:13,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:46:13,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:46:13,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:46:13,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:46:13,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:46:13,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:46:13,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:46:13,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:46:13,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:46:13,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:46:13,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:46:13,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:46:13,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:46:13,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:46:13,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:46:13,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:46:13,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:46:13,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:46:13,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:46:13,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:46:13,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:46:13,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:46:13,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:46:13,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:46:13,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:46:13,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:46:13,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:46:13,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:46:13,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:46:13,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:46:13,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:46:13,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:46:13,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:46:13,761 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 [2020-08-22 04:46:13,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:46:13,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:46:13,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:46:13,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:46:13,811 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:46:13,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:46:13,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:46:13,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:46:13,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:46:13,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:46:13,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:46:13,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:46:13,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:46:13,814 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:46:13,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:46:13,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:46:13,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:46:13,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:46:13,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:46:13,815 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:46:13,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:46:13,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:46:13,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:46:13,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:46:13,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:46:13,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:46:13,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:46:13,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:46:13,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:46:13,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:46:14,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:46:14,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:46:14,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:46:14,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:46:14,201 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:46:14,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-08-22 04:46:14,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a85fb9a/f66beb6a5e7f43e3b0a02ddb2e8f7056/FLAG1ac8b1ae9 [2020-08-22 04:46:14,730 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:46:14,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-08-22 04:46:14,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a85fb9a/f66beb6a5e7f43e3b0a02ddb2e8f7056/FLAG1ac8b1ae9 [2020-08-22 04:46:15,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00a85fb9a/f66beb6a5e7f43e3b0a02ddb2e8f7056 [2020-08-22 04:46:15,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:46:15,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:46:15,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:46:15,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:46:15,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:46:15,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15, skipping insertion in model container [2020-08-22 04:46:15,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:46:15,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:46:15,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:46:15,367 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:46:15,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:46:15,401 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:46:15,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15 WrapperNode [2020-08-22 04:46:15,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:46:15,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:46:15,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:46:15,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:46:15,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (1/1) ... [2020-08-22 04:46:15,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:46:15,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:46:15,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:46:15,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:46:15,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (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 [2020-08-22 04:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:46:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 04:46:15,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:46:15,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:46:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:46:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:46:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:46:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:46:15,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:46:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:46:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:46:15,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:46:15,941 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:46:15,941 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 04:46:15,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:46:15 BoogieIcfgContainer [2020-08-22 04:46:15,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:46:15,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:46:15,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:46:15,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:46:15,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:46:15" (1/3) ... [2020-08-22 04:46:15,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e959c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:46:15, skipping insertion in model container [2020-08-22 04:46:15,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:46:15" (2/3) ... [2020-08-22 04:46:15,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e959c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:46:15, skipping insertion in model container [2020-08-22 04:46:15,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:46:15" (3/3) ... [2020-08-22 04:46:15,955 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-08-22 04:46:15,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:46:15,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:46:15,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:46:16,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:46:16,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:46:16,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:46:16,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:46:16,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:46:16,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:46:16,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:46:16,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:46:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-22 04:46:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 04:46:16,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:46:16,048 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] [2020-08-22 04:46:16,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:46:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:46:16,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-08-22 04:46:16,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:46:16,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576772501] [2020-08-22 04:46:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:46:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:46:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:46:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:46:16,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576772501] [2020-08-22 04:46:16,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:46:16,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:46:16,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898505857] [2020-08-22 04:46:16,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:46:16,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:46:16,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:46:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:46:16,326 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-08-22 04:46:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:46:16,468 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-22 04:46:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:46:16,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-22 04:46:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:46:16,480 INFO L225 Difference]: With dead ends: 56 [2020-08-22 04:46:16,481 INFO L226 Difference]: Without dead ends: 26 [2020-08-22 04:46:16,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:46:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-22 04:46:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-22 04:46:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-22 04:46:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-08-22 04:46:16,532 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-08-22 04:46:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:46:16,533 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-08-22 04:46:16,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:46:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-08-22 04:46:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 04:46:16,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:46:16,535 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] [2020-08-22 04:46:16,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:46:16,536 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:46:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:46:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-08-22 04:46:16,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:46:16,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765861717] [2020-08-22 04:46:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:46:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:46:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:46:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:46:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:46:16,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765861717] [2020-08-22 04:46:16,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:46:16,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:46:16,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317019693] [2020-08-22 04:46:16,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:46:16,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:46:16,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:46:16,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:46:16,654 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-08-22 04:46:16,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:46:16,812 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-22 04:46:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 04:46:16,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-22 04:46:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:46:16,815 INFO L225 Difference]: With dead ends: 45 [2020-08-22 04:46:16,815 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 04:46:16,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:46:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 04:46:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-22 04:46:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 04:46:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 04:46:16,826 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-08-22 04:46:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:46:16,827 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 04:46:16,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:46:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 04:46:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 04:46:16,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:46:16,828 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] [2020-08-22 04:46:16,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:46:16,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:46:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:46:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-08-22 04:46:16,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:46:16,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998449378] [2020-08-22 04:46:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:46:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:46:16,875 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:46:16,875 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:46:16,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:46:16,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:46:16 BoogieIcfgContainer [2020-08-22 04:46:16,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:46:16,903 INFO L168 Benchmark]: Toolchain (without parser) took 1759.39 ms. Allocated memory was 148.4 MB in the beginning and 202.9 MB in the end (delta: 54.5 MB). Free memory was 102.9 MB in the beginning and 109.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,904 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.83 ms. Allocated memory is still 148.4 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,906 INFO L168 Benchmark]: Boogie Preprocessor took 138.36 ms. Allocated memory was 148.4 MB in the beginning and 202.9 MB in the end (delta: 54.5 MB). Free memory was 92.1 MB in the beginning and 180.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,907 INFO L168 Benchmark]: RCFGBuilder took 404.96 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 164.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,908 INFO L168 Benchmark]: TraceAbstraction took 951.82 ms. Allocated memory is still 202.9 MB. Free memory was 163.4 MB in the beginning and 109.8 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:46:16,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.83 ms. Allocated memory is still 148.4 MB. Free memory was 102.5 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.36 ms. Allocated memory was 148.4 MB in the beginning and 202.9 MB in the end (delta: 54.5 MB). Free memory was 92.1 MB in the beginning and 180.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.96 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 164.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 951.82 ms. Allocated memory is still 202.9 MB. Free memory was 163.4 MB in the beginning and 109.8 MB in the end (delta: 53.6 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i