/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 false -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-eb0fd7c [2020-09-21 10:28:24,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:24,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:24,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:24,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:24,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:24,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:24,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:24,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:24,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:24,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:24,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:24,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:24,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:24,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:24,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:24,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:24,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:24,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:24,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:24,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:24,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:24,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:24,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:24,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:28:24,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:28:24,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:28:24,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:28:24,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:28:24,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:28:24,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:24,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:24,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:24,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:24,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:24,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:24,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:24,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:24,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:24,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:24,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:24,911 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 [2020-09-21 10:28:24,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:24,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:24,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:24,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:24,940 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:24,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:24,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:24,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:24,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:24,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:24,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:24,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:24,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:24,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:24,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:24,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:24,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:24,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:24,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:24,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:24,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:24,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:24,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:24,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:24,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:24,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:24,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:24,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:24,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:24,945 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 -> false [2020-09-21 10:28:25,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:25,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:25,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:25,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:25,434 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:25,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2020-09-21 10:28:25,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1c889e/01ffc1421bc34557a67bae9259d055e9/FLAG66edd62b5 [2020-09-21 10:28:26,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:26,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2f.c [2020-09-21 10:28:26,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1c889e/01ffc1421bc34557a67bae9259d055e9/FLAG66edd62b5 [2020-09-21 10:28:26,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80b1c889e/01ffc1421bc34557a67bae9259d055e9 [2020-09-21 10:28:26,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:26,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:26,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:26,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:26,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:26,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26, skipping insertion in model container [2020-09-21 10:28:26,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:26,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:26,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:26,752 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:26,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:26,806 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:26,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26 WrapperNode [2020-09-21 10:28:26,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:26,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:26,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:26,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:26,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (1/1) ... [2020-09-21 10:28:26,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:26,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:26,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:26,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:26,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (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 [2020-09-21 10:28:27,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:27,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:27,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:27,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:27,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:27,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:27,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:27,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:27,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:27,416 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 10:28:27,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:27 BoogieIcfgContainer [2020-09-21 10:28:27,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:27,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:27,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:27,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:27,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:26" (1/3) ... [2020-09-21 10:28:27,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ccf113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:27, skipping insertion in model container [2020-09-21 10:28:27,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:26" (2/3) ... [2020-09-21 10:28:27,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ccf113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:27, skipping insertion in model container [2020-09-21 10:28:27,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:27" (3/3) ... [2020-09-21 10:28:27,432 INFO L109 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-09-21 10:28:27,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:27,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:27,473 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:27,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:27,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:27,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:27,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:27,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:27,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:27,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:27,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-21 10:28:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 10:28:27,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:27,531 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] [2020-09-21 10:28:27,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-09-21 10:28:27,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:27,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810166598] [2020-09-21 10:28:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:27,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810166598] [2020-09-21 10:28:27,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:27,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:27,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618977781] [2020-09-21 10:28:27,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:27,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:27,836 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-09-21 10:28:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:28,005 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-21 10:28:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:28,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-09-21 10:28:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:28,019 INFO L225 Difference]: With dead ends: 76 [2020-09-21 10:28:28,019 INFO L226 Difference]: Without dead ends: 36 [2020-09-21 10:28:28,024 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 [2020-09-21 10:28:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-21 10:28:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-21 10:28:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 10:28:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-09-21 10:28:28,077 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-09-21 10:28:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:28,078 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-09-21 10:28:28,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-09-21 10:28:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 10:28:28,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:28,080 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] [2020-09-21 10:28:28,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:28,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:28,081 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-09-21 10:28:28,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:28,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338275626] [2020-09-21 10:28:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:28,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338275626] [2020-09-21 10:28:28,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:28,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:28,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302339570] [2020-09-21 10:28:28,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:28,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:28,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:28,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:28,238 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-09-21 10:28:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:28,420 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-09-21 10:28:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:28,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-21 10:28:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:28,423 INFO L225 Difference]: With dead ends: 69 [2020-09-21 10:28:28,423 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 10:28:28,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:28:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 10:28:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-21 10:28:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-21 10:28:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-21 10:28:28,437 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-09-21 10:28:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:28,437 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-21 10:28:28,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-21 10:28:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 10:28:28,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:28,440 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] [2020-09-21 10:28:28,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:28,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:28,441 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-09-21 10:28:28,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:28,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120502507] [2020-09-21 10:28:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:28:28,561 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:28:28,561 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:28,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:28,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:28 BoogieIcfgContainer [2020-09-21 10:28:28,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:28,615 INFO L168 Benchmark]: Toolchain (without parser) took 2206.22 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 94.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:28,618 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:28:28,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.67 ms. Allocated memory is still 139.5 MB. Free memory was 100.6 MB in the beginning and 89.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:28,620 INFO L168 Benchmark]: Boogie Preprocessor took 142.37 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 89.3 MB in the beginning and 180.3 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:28,621 INFO L168 Benchmark]: RCFGBuilder took 471.34 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:28,622 INFO L168 Benchmark]: TraceAbstraction took 1184.97 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 94.4 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:28,626 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 395.67 ms. Allocated memory is still 139.5 MB. Free memory was 100.6 MB in the beginning and 89.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.37 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 89.3 MB in the beginning and 180.3 MB in the end (delta: -90.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.34 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.3 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1184.97 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 94.4 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 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