/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/s5liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:13:33,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:13:33,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:13:33,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:13:33,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:13:33,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:13:33,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:13:33,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:13:33,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:13:33,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:13:33,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:13:33,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:13:33,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:13:33,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:13:33,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:13:33,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:13:33,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:13:33,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:13:33,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:13:33,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:13:33,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:13:33,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:13:33,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:13:33,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:13:33,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:13:33,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:13:33,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:13:33,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:13:33,867 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 21:13:33,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:13:33,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:13:33,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:13:33,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:13:33,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:13:33,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:13:33,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:13:33,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:13:33,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:13:33,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:13:33,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:13:33,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:13:33,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:13:33,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:13:33,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:13:33,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:13:33,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:13:33,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:13:33,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:13:33,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:13:33,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:13:33,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:13:33,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:13:33,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:13:33,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:13:33,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:13:33,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:13:33,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:13:33,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:13:33,918 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 21:13:34,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:13:34,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:13:34,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:13:34,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:13:34,224 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:13:34,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5liff.c [2020-08-18 21:13:34,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91faba73/e8dcaedb3b7b40f3b148d30c77a4f5c1/FLAG9944beb2a [2020-08-18 21:13:34,792 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:13:34,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5liff.c [2020-08-18 21:13:34,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91faba73/e8dcaedb3b7b40f3b148d30c77a4f5c1/FLAG9944beb2a [2020-08-18 21:13:35,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d91faba73/e8dcaedb3b7b40f3b148d30c77a4f5c1 [2020-08-18 21:13:35,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:13:35,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:13:35,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:35,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:13:35,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:13:35,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35, skipping insertion in model container [2020-08-18 21:13:35,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:13:35,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:13:35,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:35,434 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:13:35,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:35,470 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:13:35,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35 WrapperNode [2020-08-18 21:13:35,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:35,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:13:35,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:13:35,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:13:35,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (1/1) ... [2020-08-18 21:13:35,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:13:35,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:13:35,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:13:35,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:13:35,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (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 21:13:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:13:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:13:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 21:13:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 21:13:35,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:13:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:13:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:13:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:13:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:13:35,933 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:13:35,934 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 21:13:35,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:35 BoogieIcfgContainer [2020-08-18 21:13:35,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:13:35,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:13:35,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:13:35,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:13:35,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:13:35" (1/3) ... [2020-08-18 21:13:35,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b14fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:35, skipping insertion in model container [2020-08-18 21:13:35,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:35" (2/3) ... [2020-08-18 21:13:35,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9b14fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:35, skipping insertion in model container [2020-08-18 21:13:35,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:35" (3/3) ... [2020-08-18 21:13:35,949 INFO L109 eAbstractionObserver]: Analyzing ICFG s5liff.c [2020-08-18 21:13:35,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:13:35,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:13:35,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:13:36,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:13:36,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:13:36,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:13:36,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:13:36,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:13:36,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:13:36,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:13:36,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:13:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-18 21:13:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 21:13:36,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:36,045 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] [2020-08-18 21:13:36,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:36,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:36,053 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-18 21:13:36,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:36,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509460489] [2020-08-18 21:13:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:13:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,283 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 21:13:36,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509460489] [2020-08-18 21:13:36,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:36,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:13:36,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772201324] [2020-08-18 21:13:36,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:13:36,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:13:36,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:13:36,315 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-18 21:13:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:36,429 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-18 21:13:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:13:36,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-18 21:13:36,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:36,441 INFO L225 Difference]: With dead ends: 60 [2020-08-18 21:13:36,441 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 21:13:36,445 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 21:13:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 21:13:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 21:13:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 21:13:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-18 21:13:36,482 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-18 21:13:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:36,482 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-18 21:13:36,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:13:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-18 21:13:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 21:13:36,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:36,484 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] [2020-08-18 21:13:36,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:13:36,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:36,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-18 21:13:36,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:36,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691701238] [2020-08-18 21:13:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:13:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:36,602 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 21:13:36,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691701238] [2020-08-18 21:13:36,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:36,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:13:36,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005131541] [2020-08-18 21:13:36,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:13:36,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:36,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:13:36,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:13:36,607 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-18 21:13:36,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:36,794 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-18 21:13:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:13:36,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-18 21:13:36,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:36,796 INFO L225 Difference]: With dead ends: 48 [2020-08-18 21:13:36,796 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 21:13:36,798 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 21:13:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 21:13:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-18 21:13:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 21:13:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-18 21:13:36,819 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-18 21:13:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:36,819 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-18 21:13:36,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:13:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-18 21:13:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:13:36,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:36,821 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] [2020-08-18 21:13:36,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:13:36,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:36,825 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-18 21:13:36,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:36,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469645558] [2020-08-18 21:13:36,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:13:36,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:13:36,881 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:13:36,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:13:36,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:13:36 BoogieIcfgContainer [2020-08-18 21:13:36,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:13:36,927 INFO L168 Benchmark]: Toolchain (without parser) took 1744.63 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 109.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:36,928 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:13:36,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.97 ms. Allocated memory is still 141.6 MB. Free memory was 102.7 MB in the beginning and 92.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:36,930 INFO L168 Benchmark]: Boogie Preprocessor took 116.87 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 182.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:36,931 INFO L168 Benchmark]: RCFGBuilder took 351.33 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 164.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:36,932 INFO L168 Benchmark]: TraceAbstraction took 982.80 ms. Allocated memory is still 205.0 MB. Free memory was 164.1 MB in the beginning and 109.0 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:36,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.97 ms. Allocated memory is still 141.6 MB. Free memory was 102.7 MB in the beginning and 92.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.87 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 182.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.33 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 164.7 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 982.80 ms. Allocated memory is still 205.0 MB. Free memory was 164.1 MB in the beginning and 109.0 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 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); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i