/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:06:03,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:06:03,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:06:03,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:06:03,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:06:03,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:06:03,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:06:03,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:06:03,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:06:03,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:06:03,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:06:03,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:06:03,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:06:03,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:06:03,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:06:03,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:06:03,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:06:03,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:06:04,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:06:04,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:06:04,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:06:04,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:06:04,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:06:04,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:06:04,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:06:04,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:06:04,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:06:04,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:06:04,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:06:04,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:06:04,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:06:04,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:06:04,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:06:04,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:06:04,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:06:04,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:06:04,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:06:04,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:06:04,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:06:04,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:06:04,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:06:04,036 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 [2020-08-21 23:06:04,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:06:04,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:06:04,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:06:04,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:06:04,086 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:06:04,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:06:04,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:06:04,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:06:04,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:06:04,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:06:04,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:06:04,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:06:04,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:06:04,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:06:04,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:06:04,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:06:04,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:06:04,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:06:04,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:06:04,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:06:04,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:06:04,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:06:04,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:06:04,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:06:04,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:06:04,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:06:04,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:06:04,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:06:04,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:06:04,093 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 23:06:04,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:06:04,404 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:06:04,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:06:04,409 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:06:04,410 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:06:04,411 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-08-21 23:06:04,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dd0876d8/2ea62bbcd4db4816b0867c81dbee22dd/FLAG2671187d7 [2020-08-21 23:06:04,904 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:06:04,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-08-21 23:06:04,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dd0876d8/2ea62bbcd4db4816b0867c81dbee22dd/FLAG2671187d7 [2020-08-21 23:06:05,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dd0876d8/2ea62bbcd4db4816b0867c81dbee22dd [2020-08-21 23:06:05,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:06:05,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:06:05,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:05,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:06:05,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:06:05,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe964b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05, skipping insertion in model container [2020-08-21 23:06:05,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:06:05,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:06:05,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:05,557 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:06:05,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:05,591 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:06:05,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05 WrapperNode [2020-08-21 23:06:05,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:05,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:06:05,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:06:05,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:06:05,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (1/1) ... [2020-08-21 23:06:05,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:06:05,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:06:05,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:06:05,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:06:05,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (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 [2020-08-21 23:06:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:06:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:06:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:06:05,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:06:05,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:06:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:06:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:06:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:06:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:06:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:06:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:06:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:06:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:06:06,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:06:06,090 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 23:06:06,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:06 BoogieIcfgContainer [2020-08-21 23:06:06,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:06:06,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:06:06,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:06:06,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:06:06,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:06:05" (1/3) ... [2020-08-21 23:06:06,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:06, skipping insertion in model container [2020-08-21 23:06:06,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:05" (2/3) ... [2020-08-21 23:06:06,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:06, skipping insertion in model container [2020-08-21 23:06:06,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:06" (3/3) ... [2020-08-21 23:06:06,107 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-08-21 23:06:06,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:06:06,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:06:06,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:06:06,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:06:06,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:06:06,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:06:06,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:06:06,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:06:06,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:06:06,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:06:06,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:06:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 23:06:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 23:06:06,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:06,213 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] [2020-08-21 23:06:06,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:06,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-21 23:06:06,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:06,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834049875] [2020-08-21 23:06:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:06:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:06,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834049875] [2020-08-21 23:06:06,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:06,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:06:06,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499798082] [2020-08-21 23:06:06,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:06:06,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:06,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:06:06,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:06:06,481 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 23:06:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:06,632 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 23:06:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:06:06,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-21 23:06:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:06,650 INFO L225 Difference]: With dead ends: 64 [2020-08-21 23:06:06,651 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 23:06:06,655 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 [2020-08-21 23:06:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 23:06:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-21 23:06:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 23:06:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 23:06:06,695 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-21 23:06:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:06,695 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 23:06:06,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:06:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 23:06:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 23:06:06,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:06,697 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] [2020-08-21 23:06:06,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:06:06,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-21 23:06:06,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:06,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249146267] [2020-08-21 23:06:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:06,732 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 23:06:06,733 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 23:06:06,733 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:06:06,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:06:06,754 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 23:06:06,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:06:06 BoogieIcfgContainer [2020-08-21 23:06:06,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:06:06,758 INFO L168 Benchmark]: Toolchain (without parser) took 1438.58 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 131.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,759 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.33 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 92.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,762 INFO L168 Benchmark]: Boogie Preprocessor took 133.23 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 183.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,763 INFO L168 Benchmark]: RCFGBuilder took 369.03 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 164.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,764 INFO L168 Benchmark]: TraceAbstraction took 657.96 ms. Allocated memory is still 205.5 MB. Free memory was 163.8 MB in the beginning and 131.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:06,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.33 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 92.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.23 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 183.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.03 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 164.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 657.96 ms. Allocated memory is still 205.5 MB. Free memory was 163.8 MB in the beginning and 131.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 32.4 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); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 [L33] COND FALSE !(i