/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=BIGGEST --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/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:40:59,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:40:59,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:40:59,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:40:59,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:40:59,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:40:59,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:40:59,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:40:59,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:40:59,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:40:59,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:40:59,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:40:59,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:40:59,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:40:59,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:40:59,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:40:59,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:40:59,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:40:59,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:40:59,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:40:59,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:40:59,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:40:59,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:40:59,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:00,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:00,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:00,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:00,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:00,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:00,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:00,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:00,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:00,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:00,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:00,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:00,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:00,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:00,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:00,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:00,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:00,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:00,026 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 [2020-09-24 20:41:00,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:00,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:00,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:00,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:00,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:00,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:00,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:00,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:00,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:00,082 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:41:00,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:00,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:00,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:00,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:00,612 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:00,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-24 20:41:00,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e/FLAG393968ff6 [2020-09-24 20:41:01,245 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:01,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-24 20:41:01,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e/FLAG393968ff6 [2020-09-24 20:41:01,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e [2020-09-24 20:41:01,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:01,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:01,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:01,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:01,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:01,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:01,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb59baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01, skipping insertion in model container [2020-09-24 20:41:01,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:01,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:01,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:01,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:01,892 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:01,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:01,939 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01 WrapperNode [2020-09-24 20:41:01,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:01,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:01,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:01,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:02,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ... [2020-09-24 20:41:02,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:02,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:02,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:02,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:02,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (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 [2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:41:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:41:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:02,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:02,544 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 20:41:02,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:02 BoogieIcfgContainer [2020-09-24 20:41:02,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:02,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:02,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:02,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:02,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:01" (1/3) ... [2020-09-24 20:41:02,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:02, skipping insertion in model container [2020-09-24 20:41:02,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (2/3) ... [2020-09-24 20:41:02,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:02, skipping insertion in model container [2020-09-24 20:41:02,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:02" (3/3) ... [2020-09-24 20:41:02,558 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-24 20:41:02,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:02,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:02,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:02,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:02,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:02,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:02,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:02,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:02,628 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:02,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:02,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 20:41:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:41:02,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:02,660 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] [2020-09-24 20:41:02,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-24 20:41:02,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:02,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823481632] [2020-09-24 20:41:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:02,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823481632] [2020-09-24 20:41:02,953 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-24 20:41:02,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:02,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-24 20:41:02,954 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-24 20:41:02,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:02,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:02,999 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 20:41:03,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:03 BoogieIcfgContainer [2020-09-24 20:41:03,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:03,004 INFO L168 Benchmark]: Toolchain (without parser) took 1408.66 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 104.2 MB in the beginning and 142.5 MB in the end (delta: -38.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:03,005 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 20:41:03,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.99 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:03,007 INFO L168 Benchmark]: Boogie Preprocessor took 129.28 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:03,008 INFO L168 Benchmark]: RCFGBuilder took 478.52 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 160.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:03,009 INFO L168 Benchmark]: TraceAbstraction took 450.10 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:03,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.99 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.28 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.52 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 160.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 450.10 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND FALSE !(i