/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:27,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:27,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:27,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:27,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:27,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:27,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:27,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:28,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:28,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:28,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:28,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:28,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:28,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:28,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:28,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:28,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:28,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:28,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:28,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:28,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:28,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:28,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:28,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:28,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:28,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:28,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:28,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:28,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:28,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:28,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:28,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:28,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:28,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:28,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:28,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:28,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:28,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:28,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:28,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:28,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:28,034 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 [2020-09-25 00:03:28,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:28,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:28,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:28,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:28,062 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:28,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:28,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:28,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:28,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:28,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:28,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:28,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:28,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:28,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:28,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:28,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:28,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:28,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:28,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:28,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:28,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:28,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:28,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:28,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:28,067 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.rcfgbuilder: Size of a code block -> SingleStatement 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; 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; 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; 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; 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; [2020-09-25 00:03:28,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:28,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:28,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:28,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:28,578 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:28,579 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2020-09-25 00:03:28,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f17dad73/31770850ca0945f88ea186892d13503c/FLAGe127f83c7 [2020-09-25 00:03:29,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:29,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2f.c [2020-09-25 00:03:29,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f17dad73/31770850ca0945f88ea186892d13503c/FLAGe127f83c7 [2020-09-25 00:03:29,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f17dad73/31770850ca0945f88ea186892d13503c [2020-09-25 00:03:29,583 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:29,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:29,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:29,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:29,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:29,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:29,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29, skipping insertion in model container [2020-09-25 00:03:29,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:29,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:29,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:29,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:29,903 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:29,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:29,953 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:29,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29 WrapperNode [2020-09-25 00:03:29,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:29,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:29,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:29,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:30,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (1/1) ... [2020-09-25 00:03:30,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:30,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:30,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:30,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:30,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (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 [2020-09-25 00:03:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:30,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:30,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:30,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:30,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:30,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:30,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:30,552 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:30,552 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 00:03:30,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:30 BoogieIcfgContainer [2020-09-25 00:03:30,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:30,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:30,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:30,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:30,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:29" (1/3) ... [2020-09-25 00:03:30,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41210a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:30, skipping insertion in model container [2020-09-25 00:03:30,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:29" (2/3) ... [2020-09-25 00:03:30,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41210a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:30, skipping insertion in model container [2020-09-25 00:03:30,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:30" (3/3) ... [2020-09-25 00:03:30,570 INFO L109 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-09-25 00:03:30,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:30,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:30,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:30,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:30,650 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:30,650 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:30,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:30,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:30,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:30,651 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:30,651 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-25 00:03:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 00:03:30,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:30,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:30,687 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2093857558, now seen corresponding path program 1 times [2020-09-25 00:03:30,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:30,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930952329] [2020-09-25 00:03:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:03:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:03:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-09-25 00:03:32,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:03:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:03:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:03:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:32,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:03:32,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:32,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 00:03:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:32,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:32,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930952329] [2020-09-25 00:03:32,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:32,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:32,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354404464] [2020-09-25 00:03:32,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:32,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:32,561 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 5 states. [2020-09-25 00:03:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:33,171 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2020-09-25 00:03:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:33,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 00:03:33,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:33,193 INFO L225 Difference]: With dead ends: 177 [2020-09-25 00:03:33,193 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 00:03:33,203 INFO L675 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 [2020-09-25 00:03:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 00:03:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-25 00:03:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 00:03:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-25 00:03:33,311 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 43 [2020-09-25 00:03:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:33,313 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-25 00:03:33,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-25 00:03:33,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 00:03:33,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:33,325 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, 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, 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, 1] [2020-09-25 00:03:33,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:33,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1469726247, now seen corresponding path program 1 times [2020-09-25 00:03:33,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:33,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911528074] [2020-09-25 00:03:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:03:33,412 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:03:33,413 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:33,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:33,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:33 BoogieIcfgContainer [2020-09-25 00:03:33,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:33,463 INFO L168 Benchmark]: Toolchain (without parser) took 3876.49 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.0 MB in the beginning and 121.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:33,466 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:03:33,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.25 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:33,469 INFO L168 Benchmark]: Boogie Preprocessor took 133.46 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:33,470 INFO L168 Benchmark]: RCFGBuilder took 469.92 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:33,472 INFO L168 Benchmark]: TraceAbstraction took 2896.91 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 155.2 MB in the beginning and 121.5 MB in the end (delta: 33.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:33,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.25 ms. Allocated memory is still 139.5 MB. Free memory was 102.3 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.46 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.92 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 155.2 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2896.91 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 155.2 MB in the beginning and 121.5 MB in the end (delta: 33.7 MB). Peak memory consumption was 67.3 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); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i