/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:13:21,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:13:21,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:13:21,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:13:21,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:13:21,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:13:21,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:13:21,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:13:21,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:13:21,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:13:21,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:13:21,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:13:21,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:13:21,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:13:21,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:13:21,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:13:21,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:13:21,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:13:21,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:13:21,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:13:21,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:13:21,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:13:21,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:13:21,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:13:21,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:13:21,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:13:21,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:13:21,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:13:21,742 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 [2020-08-18 21:13:21,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:13:21,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:13:21,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:13:21,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:13:21,782 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:13:21,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:13:21,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:13:21,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:13:21,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:13:21,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:13:21,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:13:21,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:13:21,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:13:21,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:13:21,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:13:21,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:13:21,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:13:21,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:13:21,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:13:21,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:13:21,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:13:21,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:13:21,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:13:21,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:13:21,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:13:21,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:13:21,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:13:21,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:13:21,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:13:21,789 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=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:13:22,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:13:22,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:13:22,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:13:22,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:13:22,133 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:13:22,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-08-18 21:13:22,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b4dbade/37726649bcce483caed2761812337660/FLAG221a08516 [2020-08-18 21:13:22,638 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:13:22,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms1f.c [2020-08-18 21:13:22,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b4dbade/37726649bcce483caed2761812337660/FLAG221a08516 [2020-08-18 21:13:23,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b4dbade/37726649bcce483caed2761812337660 [2020-08-18 21:13:23,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:13:23,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:13:23,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:23,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:13:23,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:13:23,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6179954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23, skipping insertion in model container [2020-08-18 21:13:23,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:13:23,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:13:23,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:23,320 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:13:23,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:23,351 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:13:23,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23 WrapperNode [2020-08-18 21:13:23,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:23,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:13:23,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:13:23,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:13:23,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (1/1) ... [2020-08-18 21:13:23,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:13:23,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:13:23,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:13:23,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:13:23,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (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 [2020-08-18 21:13:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:13:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:13:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 21:13:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 21:13:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:13:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:13:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 21:13:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:13:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:13:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:13:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:13:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:13:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:13:23,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:13:23,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:13:23,776 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 21:13:23,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:23 BoogieIcfgContainer [2020-08-18 21:13:23,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:13:23,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:13:23,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:13:23,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:13:23,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:13:23" (1/3) ... [2020-08-18 21:13:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5652533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:23, skipping insertion in model container [2020-08-18 21:13:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:23" (2/3) ... [2020-08-18 21:13:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5652533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:23, skipping insertion in model container [2020-08-18 21:13:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:23" (3/3) ... [2020-08-18 21:13:23,792 INFO L109 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-08-18 21:13:23,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:13:23,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:13:23,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:13:23,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:13:23,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:13:23,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:13:23,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:13:23,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:13:23,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:13:23,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:13:23,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:13:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 21:13:23,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 21:13:23,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:23,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:23,924 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-18 21:13:23,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9931580] [2020-08-18 21:13:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:13:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:13:24,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9931580] [2020-08-18 21:13:24,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:24,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:13:24,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011341193] [2020-08-18 21:13:24,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:13:24,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:24,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:13:24,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:13:24,187 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-18 21:13:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:24,306 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-18 21:13:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:13:24,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 21:13:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:24,317 INFO L225 Difference]: With dead ends: 54 [2020-08-18 21:13:24,318 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 21:13:24,322 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 [2020-08-18 21:13:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 21:13:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 21:13:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 21:13:24,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-18 21:13:24,360 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-18 21:13:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:24,361 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-18 21:13:24,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:13:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-18 21:13:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 21:13:24,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:24,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:24,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:13:24,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-18 21:13:24,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:24,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335161535] [2020-08-18 21:13:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:13:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:13:24,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335161535] [2020-08-18 21:13:24,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:24,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:13:24,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009247608] [2020-08-18 21:13:24,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:13:24,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:13:24,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:13:24,525 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-18 21:13:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:24,682 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-18 21:13:24,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:13:24,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 21:13:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:24,684 INFO L225 Difference]: With dead ends: 40 [2020-08-18 21:13:24,684 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 21:13:24,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:13:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 21:13:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-08-18 21:13:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 21:13:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-18 21:13:24,694 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-08-18 21:13:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:24,695 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-18 21:13:24,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:13:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-18 21:13:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 21:13:24,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:24,696 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] [2020-08-18 21:13:24,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:13:24,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:24,698 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-18 21:13:24,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:24,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613833574] [2020-08-18 21:13:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:13:24,734 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:13:24,735 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:13:24,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:13:24,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:13:24 BoogieIcfgContainer [2020-08-18 21:13:24,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:13:24,762 INFO L168 Benchmark]: Toolchain (without parser) took 1732.00 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 109.0 MB in the end (delta: -7.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,763 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.78 ms. Allocated memory is still 137.9 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,765 INFO L168 Benchmark]: Boogie Preprocessor took 111.22 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 177.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,766 INFO L168 Benchmark]: RCFGBuilder took 316.55 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 160.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,767 INFO L168 Benchmark]: TraceAbstraction took 976.09 ms. Allocated memory is still 199.8 MB. Free memory was 160.1 MB in the beginning and 109.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:24,771 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.78 ms. Allocated memory is still 137.9 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.22 ms. Allocated memory was 137.9 MB in the beginning and 199.8 MB in the end (delta: 61.9 MB). Free memory was 90.7 MB in the beginning and 177.0 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.55 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 160.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 976.09 ms. Allocated memory is still 199.8 MB. Free memory was 160.1 MB in the beginning and 109.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i